Continual Drag Implemented
Continual Drag Implemented
Continual Drag Implemented
ReferenceProperty availability

Make ReferenceProperty have the same availability as the DyanmicObject that the reference is on.
Merge pull request #657 from AnalyticalGraphicsInc/referenceAvailability

ReferenceProperty availability
Add CONTRIBUTORS.md page listing all Cesium contributors.
Overlap frustums.
Merge pull request #661 from AnalyticalGraphicsInc/contributors

Add CONTRIBUTORS.md page listing all Cesium contributors.
Timeline drag calls transfered from handleMouseMove to updateFromClock
autoplay bug corrected
conventions followed
Merge remote-tracking branch 'origin/master' into overlapFrustums
continuous update for the general case removed
variable name changed to appropriate name
Merge pull request #663 from AnalyticalGraphicsInc/overlapFrustums

Overlap Frustums
[ant] tweak the clean target
Merge pull request #667 from vicb/clean

[ant] tweak the clean target
first pass at GridImageryProvider contrib
tweak comment
else if condition removed

Signed-off-by: Ravi Agrawal <ravi.agrwl420@gmail.com>