tests: add an environment variable to disable network tests

This is useful when we want to test the package on an environement
without networking. This can happen on some buildbots, like the Debian
builders.
Fix @unittest.skipIf error on Python 2.6.
Avoid unwanted extra spaces in string literal
Merge pull request #168 from merwok/patch-1

Avoid unwanted extra spaces in string literal
Style cleanup.
Add template for the kivy python-framework to README.rst
add documentation about command line arguments

text is auto generated from the arguments help text

ref. #166
Merge pull request #171 from hackebrot/master

Add template for the kivy python-framework to README.rst
updates 2.6 requirements to fix issue #174.

 simplejson > 2.1
Merge branch 'feature/Document-the-command-line-options' of git://github.com/saxix/cookiecutter into saxix-feature/Document-the-command-line-options
Merge branch 'saxix-feature/Document-the-command-line-options'
Add troubleshooting info about Python 3.3 tests and Tox.
Merge branch 'feature/issue-174' of git://github.com/saxix/cookiecutter into saxix-feature/issue-174
Merge branch 'saxix-feature/issue-174'
Add @merwok, @hackebrot, @saxix to AUTHORS.