added examples in Matrix4.js
Replaced Uniform.getFrameNumber and Uniform.getTime with Uniform.getFrameState
Added czm_morphTime.  Remove primitive-specific morph times
Minor scene mode cleanup
Improvements to CentralBody fragment shader.

Use an if statement instead of the crazy two-step-alpha-zeroing for
excluding a texture outside its extent of applicability.  Avoiding ifs is
sometimes good, but here it just overcomplicates the shader.  In theory,
with dynamic branching, the if could be faster, too.  I wasn't able to
measure any performance difference one way or the other from this change.

Treat alpha like the other properties (hue, gamma, etc.).  Only apply it
if it is not 1.0.

Removing debugging feature of showing texture boundaries.
TileCoordinatesImageryProvider does a better job of that anyway.
Issue #705 - Replace pseudo-private functions with file-scoped functions

Renderer module fixed
Replace pseudo-private functions with file-scoped functions
fixed typo
Replace pseudo-private functions with file-scoped functions
Replace pseudo-private functions with file-scoped functions
fixed typo
added some more examples and rephrased explanations
Merge branch 'master' of github.com:AnalyticalGraphicsInc/cesium into examples
made correction in getRotation example
made correction in getRotation example
Merge master to cv
DynamicPath cleanup

Backout workaround for #602 which is no longer needed because the initial problem was fixed with #725
Merge branch 'master' of github.com:AnalyticalGraphicsInc/cesium into examples
Merge pull request #729 from AnalyticalGraphicsInc/simplifyCBFS

Improvements to CentralBody fragment shader.
mistakes in examples corrected