Merge pull request #1 from iiiyu/develop

Develop
fix import
update podspec file
update readme
fix typo
Rotate at random angle when dismissed
Code syntax highlighting. :sparkling_heart:
Merge pull request #5 from linjunpop/patch-1

Code syntax highlighting.
Add support to iOS 5 and lower
prepare examples for iOS5
add support for customize background color of alert view
update example
Merge pull request #4 from alexanderedge/master

Dismiss with random angle
add support for customize background color of alert view
update example
Merge branch 'develop' of https://github.com/Sumi-Interactive/SIAlertView into develop
Merge branch 'develop' into ios5
fix windows hierarchy issue in iOS 5
update README
Added Info to users

Added tip if users have errors (-fobjc-arc)
make sure customized alert shows below system's alert
update podspec