_scrubJulian updated in setTimeFromBuffer for czml files

Signed-off-by: Ravi Agrawal <ravi.agrwl420@gmail.com>
_scrubJulian update moved up

Signed-off-by: Ravi Agrawal <ravi.agrwl420@gmail.com>
Merge branch 'master' of https://github.com/AnalyticalGraphicsInc/cesium into timeline-scrubber
updateFromClock called inside setTimeFromBuffer
Merge pull request #674 from macoda/timeline-scrubber

_scrubJulian updated in setTimeFromBuffer for czml files
Only set crossorigin on images that are actually cross-origin.

Cross-origin URLs are detected automatically by comparing the URL to the document location.
Merge pull request #685 from AnalyticalGraphicsInc/smarterCrossOriginImages

Only set crossorigin on images that are actually cross-origin.
Merge remote-tracking branch 'origin/master' into glowingLines