Wrapped any layout guide references in an #ifdef __IPHONE_7_0 to prevent iOS 6 SDK compile errors
Pod spec version to 0.0.8
Added __unused to xValid, yValid and superview in 2 methods to prevent compile time warnings when building for release. This is due to NSAsserts being stripped out in release mode.
Merge pull request #14 from rhodgkins/master

iOS 6.1 SDK fix