make initWithFrame work
Merge pull request #8 from willpragnell/master

Made -initWithFrame: work.
fix demo
Merge pull request #9 from willpragnell/demo

Fix demo
Added a comment in header for AMBlurView
Use toolbar instead of toolBar to match capitalization of UIToolbar.
Init methods now return instancetype instead of id for better code completion and subclassing.
Merge pull request #11 from ZevEisenberg/master

Code cleanup and instancetype instead of id
Updated podspec
merge