Switch to UglifyJS2 for slightly better minification.
Update the sky box to use the correct orientation.

Also added a `skyBoxBaseUrl` parameter to the widget, for easily
swapping out different sets of SkyBox images.
Merge pull request #488 from AnalyticalGraphicsInc/stars

Update the sky box to use the correct orientation.
Use when-fu to eliminate lots of tricky code.
Update frame state in render instead of initializeFrame.
Update erosion picking example.
Merge pull request #491 from AnalyticalGraphicsInc/pickingExample

Picking Example
Update CHANGES.md
Merge pull request #492 from AnalyticalGraphicsInc/loadCubeMapCleanup

Simplify and improve loadCubeMap function
Make Transforms (with default EOP) usable in Internet Explorer.
Merge pull request #493 from AnalyticalGraphicsInc/eopOnIE

Make Transforms (with default EOP) usable in Internet Explorer.
Update getFrameState doc.
Merge pull request #490 from AnalyticalGraphicsInc/frameStateUpdate

Frame state update
Merge remote-tracking branch 'origin/master' into playback

Conflicts:
	CHANGES.md