Catch-up C++ samples (screen joystick support for lua and AngelScript)

Note that samples using left mouse click on desktop (8,11,13,15...) won't work as expected with touch emulation.

Simply pass '-touch' to the player's command-line to test on desktop.
Merge remote-tracking branch 'remotes/mike3d/master'
Revert the change to use the wind shader in StaticScene example (as it is no longer static in that case.)
Allow triggering mouse button presses from a screen joystick while using touch emulation.
Be explicit in setting the file permissions when installing.
Closes #352.
For Travis CI - switch CI build to use OS X build environment.