Improve inSensorShadow

Use point in world coordinates as arguement in order to avoid unnecessary
transformation.
Trying out travis-ci
Trying to get it working
Wrong node path
Convert the single-tile Earth image into tiled imagery.
Update CHANGES.md.
Trying script instead of install
Tweak CHANGES.md.
Merge branch 'master' of https://github.com/AnalyticalGraphicsInc/cesium into sensorImprovements
Replace remaining usages of old single-tile image.
Remove unused parameters from getIntersectionColor.:
Merge pull request #915 from AnalyticalGraphicsInc/natural-earth-2

Convert the single-tile Earth image into tiled imagery.
GeoJSON support for EPSG CRS type.

Earlier draft versions of GeoJSON have an EPSG CRS type.
While the 1.0 specification has no such type, many applications still generate GeoJSON in this format.
Changes after review.
Fix typo.
Merge pull request #918 from AnalyticalGraphicsInc/geojson

GeoJSON support for EPSG CRS type.
Cleanup CHANGES before releasing b18.
Clean up descriptions on build targets.
Updated to node 0.10 and added jsHint
Merge pull request #919 from fstoner/sensorImprovements

Sensor improvements