Doing house cleaning works to remove unnecessary files.
Save temp work
temp contains settings after upgrade to Xcode 4.3
Merge branch 'temp' into V2.0

Conflicts:
	genesixCommon.xcodeproj/project.pbxproj
Fixed a bug where I put an operation inside NSAssert which will be removed in release.
Removed UDID functions.
Removed NSObject+BlockDealy.*
Removed compiler warning in Xcode 4.3
Added UIImage Category files.
Use UIGraphicBeginConextWithOption
Merge branch 'V2.0' of github.com:genesix/genesixCommon into V2.0
Fixed some error according to Xcode's warning message.
Merge branch 'V2.0' of github.com:genesix/genesixCommon into V2.0

Conflicts:
	UIImage+Alpha.m
	UIImage+Resize.m
	UIImage+RoundedCorner.m
update code to suit for Xcode 4.6 warning
update DeploymentTarget to iOS 5.1
make UDID free
remove test for UDID
Merge branch 'Xcode4.6'

Conflicts:
	SLDBAccess.m
	SLDevice.h
	SLDevice.m
	SLKeychainHelper.m
	UIColor+NSString.m
	UIImage+Alpha.m
	UIImage+RoundedCorner.m
	genesixCommon.xcodeproj/project.pbxproj