Updated Github API to V3.

Github API V2 has been removed.  The response data format also changed.
Updated Github API to V3.

Github API V2 has been removed.  The response data format also changed.
Twitter API call and links are now protocol relative
Merge branch 'master' of github.com:imathis/octopress
Using https instead of protocol relative urls, for Pinboard and Twitter feeds
Disabled Rsync delete by default. Closes #787
merge
lots of posts and stuff