Merge pull request #64 from anprak/master

Fix for #63. Updated to selectively include domains to show on hub page.
Merge https://github.com/anprak/khan-windows-8
Issue #66 - Error compiling winjs.d.ts after upgraing to typescript 0.9.1.1
Issue #12 - Change the user API integration to directly talk to KA API
Merge pull request #67 from bbondy/master

Merging updates to use KA user API instead of learning circle's. Issue #12 and #66