Add Cross-platform development: Xamarin
Merge pull request #18 from stanislaw/new

Add Cross-platform development: Xamarin
Add Networking/Other: socket.IO-objc
Merge pull request #19 from stanislaw/new

Add Networking/Other: socket.IO-objc
Add Beta testing: Ubertesters
Merge pull request #20 from stanislaw/new

Add Beta testing: Ubertesters
Bump last-update
Merge branch 'master' into gh-pages
Make page