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.