diff --git a/.bumpversion.cfg b/.bumpversion.cfg
new file mode 100644
index 0000000..9aa9e0c
--- /dev/null
+++ b/.bumpversion.cfg
@@ -0,0 +1,7 @@
+[bumpversion]
+current_version = 0.7.7
+commit = True
+tag = False
+
+[bumpversion:file:VERSION]
+
diff --git a/.gitignore b/.gitignore
index 9bdd69e..901668c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 .idea
 .cache
 /.pypirc
+/.tox/
diff --git a/.travis.yml b/.travis.yml
index e15438a..b434792 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,16 +17,12 @@ before_script:
 
 install:
   - "curl https://bootstrap.pypa.io/ez_setup.py -o - | python"
-  - "pip install -r test/requirements.txt"
-  - "sudo apt-get -y install pandoc"
-  - "pip install pypandoc"
+  - "pip install tox-travis"
   - "pip install ."
 # command to run tests
 script:
   - "export PATH=$PATH:$PWD/tf_bin"
-  - cd test
-  - py.test
-  - cd ..
+  - tox
 
 deploy:
   # test pypi
diff --git a/README.md b/README.md
index 01c7b0d..8594eb4 100644
--- a/README.md
+++ b/README.md
@@ -29,10 +29,6 @@ For any terraform command
                 if a value is None, will skip this option
         :return: ret_code, out, err
 
-For apply/destroy method, the flag options, like, `-no-color` or `-force`
-have been implemented as boolean argument. simply use `is_no_color=True/False` for
-apply/destroy method
-
 
 ## Examples
 ### Have a test.tf file under folder "/home/test"
@@ -46,7 +42,7 @@ In python-terraform:
 
     from python_terraform import Terraform
     tf = terraform(working_dir='/home/test')
-    tf.apply(is_no_color=True, refresh=False, var={'a':'b', 'c':'d'})
+    tf.apply(no_color=IsFlagged, refresh=False, var={'a':'b', 'c':'d'})
 #### taint command, allow-missing and no color
 In shell:
 
diff --git a/VERSION b/VERSION
index 4d01880..11d9d6c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.7.6
\ No newline at end of file
+0.7.7
\ No newline at end of file
diff --git a/python_terraform/__init__.py b/python_terraform/__init__.py
index 9c7dfb1..63ef189 100644
--- a/python_terraform/__init__.py
+++ b/python_terraform/__init__.py
@@ -53,57 +53,40 @@ class Terraform:
         # store the tfstate data
         self.tfstate = dict()
 
-    def apply(self,
-              dir=None,
-              is_no_color=True,
-              is_input=False,
-              **kwargs):
+    def apply(self, dir_or_plan=None, **kwargs):
         """
         refer to https://terraform.io/docs/commands/apply.html
-        :raise RuntimeError when return code is not zero
-        :param is_no_color: if True, add flag -no-color
-        :param is_input: if True, add option -input=true
-        :param dir: folder relative to working folder
+        no-color is flagged by default
+        :param dir_or_plan: folder relative to working folder
         :param kwargs: same as kwags in method 'cmd'
         :returns return_code, stdout, stderr
         """
-
-        args, option_dict = self._create_cmd_args(is_input,
-                                                  is_no_color,
-                                                  dir,
-                                                  kwargs)
+        default = dict()
+        args, option_dict = self._create_cmd_args(dir_or_plan, default, kwargs)
 
         return self.cmd('apply', *args, **option_dict)
 
-    def _create_cmd_args(self, is_input, is_no_color, dir, kwargs):
-        option_dict = dict()
+    def _create_cmd_args(self, dir_or_plan, default_dict, kwargs):
+        option_dict = default_dict
         option_dict['state'] = self.state
         option_dict['target'] = self.targets
         option_dict['var'] = self.variables
         option_dict['var_file'] = self.var_file
         option_dict['parallelism'] = self.parallelism
-        if is_no_color:
-            option_dict['no_color'] = IsFlagged
-        option_dict['input'] = is_input
+        option_dict['no_color'] = IsFlagged
+        option_dict['input'] = True
         option_dict.update(kwargs)
-        args = [dir] if dir else []
+        args = [dir_or_plan] if dir_or_plan else []
         return args, option_dict
 
-    def destroy(self, working_dir=None, is_force=True,
-                is_no_color=True, is_input=False, **kwargs):
+    def destroy(self, dir_or_plan=None, **kwargs):
         """
         refer to https://www.terraform.io/docs/commands/destroy.html
-        :raise RuntimeError when return code is not zero
+        force/no-color option is flagged by default
         :return: ret_code, stdout, stderr
         """
-
-        args, option_dict = self._create_cmd_args(is_input,
-                                                  is_no_color,
-                                                  working_dir,
-                                                  kwargs)
-        if is_force:
-            option_dict['force'] = IsFlagged
-
+        default = {'force': IsFlagged}
+        args, option_dict = self._create_cmd_args(dir_or_plan, default, kwargs)
         return self.cmd('destroy', *args, **option_dict)
 
     def generate_cmd_string(self, cmd, *args, **kwargs):
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..0740785
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+tox-pyenv
+pytest
+tox
\ No newline at end of file
diff --git a/test/requirements.txt b/test/requirements.txt
deleted file mode 100644
index 55b033e..0000000
--- a/test/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-pytest
\ No newline at end of file
diff --git a/test/test_terraform.py b/test/test_terraform.py
index d5a9c83..a1d0cfb 100644
--- a/test/test_terraform.py
+++ b/test/test_terraform.py
@@ -5,7 +5,7 @@ import logging
 import re
 
 logging.basicConfig(level=logging.WARN)
-
+current_path = os.path.dirname(os.path.realpath(__file__))
 
 STRING_CASES = [
      [
@@ -61,28 +61,40 @@ class TestTerraform:
 
     @pytest.mark.parametrize(*CMD_CASES)
     def test_cmd(self, method, expected_output):
-        tf = Terraform()
+        tf = Terraform(working_dir=current_path)
         ret, out, err = method(tf)
         assert expected_output in out
         assert ret == 0
 
     def test_state_data(self):
-        tf = Terraform(working_dir='test_tfstate_file', state='tfstate.test')
+        cwd = os.path.join(current_path, 'test_tfstate_file')
+        tf = Terraform(working_dir=cwd, state='tfstate.test')
         tf.read_state_file()
         assert tf.tfstate.modules[0]['path'] == ['root']
 
     def test_apply(self):
-        tf = Terraform(working_dir='apply_tf', variables={'test_var': 'test'})
+        cwd = os.path.join(current_path, 'apply_tf')
+        tf = Terraform(working_dir=cwd, variables={'test_var': 'test'})
         ret, out, err = tf.apply(var={'test_var': 'test2'})
         assert ret == 0
 
+    def test_override_no_color(self):
+        cwd = os.path.join(current_path, 'apply_tf')
+        tf = Terraform(working_dir=cwd, variables={'test_var': 'test'})
+        ret, out, err = tf.apply(var={'test_var': 'test2'},
+                                 no_color=IsNotFlagged)
+        out = out.replace('\n', '')
+        assert '\x1b[0m\x1b[1m\x1b[32mApply' in out
+
     def test_get_output(self):
-        tf = Terraform(working_dir='apply_tf', variables={'test_var': 'test'})
+        cwd = os.path.join(current_path, 'apply_tf')
+        tf = Terraform(working_dir=cwd, variables={'test_var': 'test'})
         tf.apply()
         assert tf.output('test_output') == 'test'
 
     def test_destroy(self):
-        tf = Terraform(working_dir='apply_tf', variables={'test_var': 'test'})
+        cwd = os.path.join(current_path, 'apply_tf')
+        tf = Terraform(working_dir=cwd, variables={'test_var': 'test'})
         ret, out, err = tf.destroy()
         assert ret == 0
         assert 'Destroy complete! Resources: 0 destroyed.' in out
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..9d0b810
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,11 @@
+# content of: tox.ini , put in same dir as setup.py
+[tox]
+envlist = py27, py35
+[testenv]
+deps=pytest
+commands=py.test test
+
+[travis]
+python =
+  2.7: py27
+  3.5: py35
\ No newline at end of file