Tweak the look of GridMaterial based on user feedback.
Dynamic Paths would sometimes render incorrectly.

We were storing the referenceFrame property on each interval rather than the interval.data property.  When an interval is split (because of new incoming data) the property was lost.  We need to stre the referenceFrame on the data property instead.
#571: start of implementation for creating tab for each label.
implemented multiple labels per example, via CSV
#571: de-cluttered main tab cluster by putting labels in subtabs of Gallery
#571:  Added label meta data to a few examples
Merge remote-tracking branch 'agi/master' into sandcastleGalleryLabels
Merge branch 'master' into fixPaths
Gave search results it's own tab, which displays when the search is not blank (else, its hidden)
renamed label meta tag to 'cesium-sandcastle-labels'
Merge pull request #632 from AnalyticalGraphicsInc/fixPaths

Dynamic Paths would sometimes render incorrectly.
clean-up
Merge pull request #635 from hpinkos/sandcastleGalleryLabels

Sandcastle gallery labels
Merge pull request #626 from AnalyticalGraphicsInc/grid-material-tweaks

Tweak the look of GridMaterial based on user feedback.
Update README.md