Merge branch 'develop'

Fixed wrong layers reference which was going through an unnecessary R…

…eadonlyCollection creation.

Added Examples.unity to .gitignore.

Fixed an issue with Transformer2D scaling being stuck after changed f…

…rom another script (TouchScript#192).

Merge remote-tracking branch 'origin/master'

Added docs to TouchInputModule.

Fixed 2D layers sorting.

Uped version.

Optimized scaling in Transformer2D.

Multiple Touch Managers in a scene are now handled correctly (issue T…

…ouchScript#136).