diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 3de0e74..8c1f761 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.8.5
+current_version = 0.8.6
 commit = True
 tag = False
 
diff --git a/README.md b/README.md
index dae478f..1540092 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ python-terraform is a python module provide a wrapper of `terraform` command lin
 ## Usage
 #### For any terraform command
 
-    from python_terraform import Terraform
+    from python_terraform import *
     t = Terraform()
     return_code, stdout, stderr = t.<cmd_name>(*arguments, **options)
 
@@ -20,13 +20,13 @@ python-terraform is a python module provide a wrapper of `terraform` command lin
 to be able to call the method, you could call cmd_name by adding `_cmd` after command name, for example,
 `import` here could be called by
 
-    from python_terraform import Terraform
+    from python_terraform import *
     t = Terraform()
     return_code, stdout, stderr = t.import_cmd(*arguments, **options)
 
 or just call cmd method directly
 
-    from python_terraform import Terraform
+    from python_terraform import *
     t = Terraform()
     return_code, stdout, stderr = t.cmd(<cmd_name>, *arguments, **options)
     
@@ -93,19 +93,19 @@ In shell:
     
 In python-terraform:
 
-    from python_terraform import Terraform
+    from python_terraform import *
     tf = Terraform(working_dir='/home/test')
     tf.apply(no_color=IsFlagged, refresh=False, var={'a':'b', 'c':'d'})
     
 or
 
-    from python_terraform import Terraform
+    from python_terraform import *
     tf = Terraform()
     tf.apply('/home/test', no_color=IsFlagged, refresh=False, var={'a':'b', 'c':'d'})
 
 or
 
-    from python_terraform import Terraform
+    from python_terraform import *
     tf = Terraform(working_dir='/home/test', variables={'a':'b', 'c':'d'})
     tf.apply(no_color=IsFlagged, refresh=False)
     
@@ -117,7 +117,7 @@ In shell:
     
 In python-terraform:
     
-    from python_terraform import Terraform
+    from python_terraform import *
     tf = terraform(working_dir='/home/test')
     tf.fmt(diff=True)
 
diff --git a/python_terraform/__init__.py b/python_terraform/__init__.py
index fe0d3d3..896d2e0 100644
--- a/python_terraform/__init__.py
+++ b/python_terraform/__init__.py
@@ -294,8 +294,9 @@ class VariableFiles(object):
 
     def create(self, variables):
         with tempfile.NamedTemporaryFile('w+t', delete=False) as temp:
-            logging.debug('{0} is created'.format(temp.name))
+            log.debug('{0} is created'.format(temp.name))
             self.files.append(temp)
+            log.debug('variables wrote to tempfile: {0}'.format(str(variables)))
             temp.write(json.dumps(variables))
             file_name = temp.name
 
diff --git a/setup.py b/setup.py
index e2011fe..988cc76 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ except IOError:
 
 setup(
     name=module_name,
-    version='0.8.5',
+    version='0.8.6',
     url='https://github.com/beelit94/python-terraform',
     license='MIT',
     author='Freddy Tan',