Added support for using different versions of Facebook SDK
Added a function to check what version of Graph API is being used.
Added tests for using different versions of the Graph API
Code is now PEP 8 compliant.
Removed extra '/' from version. Adding new api versions now only involves one line change
Tests now rely on an app access token created with the app ID/secret enviroment variables instead of relying on another access token enviroment variable
Removed setUp method entirely from tests because no access token is necessary to run tests
Merge pull request #158 from jeffreychan637/master

Add support for Graph API versionoing - see https://developers.facebook.com/docs/apps/versions. Fix #142.
Add licensing information to README.

Fix #147.
Fix bug where access token calls fail w/ version.

When an version was applied to the GraphAPI object, access token calls
would fail (because the "oauth/access_token" endpoint does not use a
version).

Fix bug by removing version from the request method and manually
applying it to the specific methods that need it.
Fix #161.

Fix regression described in #161 by adding a default API version to all
calls.

Note that while the default version is 1.0, Facebook will automatically
coerce API calls to later versions for newer applications that are
unable to access this version.
Fix #131.

Thanks @dvolgyes for reporting this.
Fix multiple regressions.

Fix regressions related to versioning and FQL.
Fix #169.

Fix API endpoint called by extend_access_token.
Highlight code blocks
Remove trailing whitespace
Add valid API verstion 2.2.
Updated tests for API version 2.2
Merge pull request #174 from wumf-terra/api_2.2

Add new version 2.2. See https://developers.facebook.com/blog/post/2014/10/30/graph-api-v2.2/
Merge pull request #173 from yous/patch-syntax-highlighting

Better highlighting of code blocks in README and removal of trailing whitespace in example HTML files.