Merge pull request #648 from ablake/next

UI and Font opacity fixes.
Updated the main README.md
Added links to the website, forums and documentation.
Suggested that people post feature requests on the forum.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Minor update to external-deps/README.md
Merge pull request #649 from dgough/next

Updated the main README.md
Adjust the look of the forms test.
Updated Linux libopenal.a to include support for PulseAudio backend
Fixes displaced joystick sometimes seen on start-up when using virtual gamepad.
Updated Linux libopenal.a with PulseAudio back-end support
Merge pull request #651 from seanpaultaylor/next

Next
Merge pull request #650 from kwhatmough/next

Adjust the look of the forms test and fix the displaced joystick issue.
Document the current limitation on MESH type collision shapes mentioned in #452.
Merge pull request #652 from kwhatmough/next

Document the current limitation on MESH type collision shapes mentioned ...
Windows and Mac will now use the desktop resolution if fullscreen=true and width and height are not set.
One of the SpriteBatch::draw methods was passing the uv values in the wrong order.

Thanks puzzlefun for pointing this out.
http://www.gameplay3d.org/forums/viewtopic.php?f=7&t=246
Merge pull request #654 from dgough/next

Windows and Mac will now use the desktop resolution if fullscreen=true and width and height are not set
Removed folder that is not needed.
Updating for GamePlay v1.6.0
Merge pull request #657 from seanpaultaylor/next

Next
Fixed Node::findNodes() so that it searches the MeshSkin too.
Fixed #661