Replaced example shebangs so it works with virtualenvs

Author: mpaolino

examples/adwords/adwords_appengine_demo/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/demo/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/demo/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/handlers/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/handlers/api_handler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/handlers/ndb_handler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/models/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/models/app_user.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/views/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #

examples/adwords/adwords_appengine_demo/views/add_adgroup_view.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright 2014 Google Inc. All Rights Reserved.
 #