Change uses of __bridge_transfer to CFBridging{Retain,Release}
Merge pull request #16 from numist/numist/fix-bridging-syntax

Change uses of __bridge_transfer to CFBridging{Retain,Release}
HAXSystem doesn't have an +element method, but it does have +system
Merge pull request #17 from numist/numist/readme-correction

Simple correctness update to the README.
Merge branch 'develop' into numist/update-project