Delete warning

delete warning for unused vars.
Upgrade podSpec for version
Merge pull request #57 from dimitar-lazarov/master

Useful properties to enable/disable rotation and access to crop/transform values
Merge pull request #46 from DamienMartin/master

Delete warning
Also pass the crop rect to delegate.
Merge pull request #62 from yllan/master

Also pass the crop rect to delegate.