Added Info to users

Added tip if users have errors (-fobjc-arc)
added rotation support for iOS 5
Merge pull request #19 from NextfazeSD/master

Orientation support for iOS 5
Merge pull request #16 from nikebot/patch-1

Added Info to users
fixed issue that keyboard won't show up in iOS 5 after SIAlertView is dismissed
Merge pull request #21 from aporat/master

fixed issue that keyboard won't show up in iOS 5 after SIAlertView is dismissed
Fix viewBackgroundColor doesn't get involved.
Merge pull request #23 from 5D/patch-1

Fix viewBackgroundColor doesn't get involved.
fix modalview getting closed when dismissing alert [iOS 5]
Merge pull request #28 from reekris/keywindowfix

fix modalview getting closed when dismissing alert [iOS 5]
fixer a crash when validateLayout got called after teardown.