first pass
add default function definition for supportsTileDataAvailable()
Don't crash if supportsTileDataAvailable is not defined.
use single function getTileDataAvailable() and add to other terrain providers
move profile scene
add SanFrancisco profile scene
added wkid 102113
jshint pass
contributor and changes updates
Merge branch 'master' into tile-loading
move profiling test to sandcastle
update CHANGES.md
add specs for getTileDataAvailable()
test the getTileDataAvailable() false case as well
ammend documentation
Fix #2107, Sandcastle highlighting in IE 11.
Tweaks to the default InfoBox table.
Merge pull request #2116 from AnalyticalGraphicsInc/issue2107

Fix #2107, Sandcastle highlighting in IE 11.
Merge pull request #2117 from AnalyticalGraphicsInc/style-tweaks

Tweaks to the default InfoBox table.
Add a function to set the default EntityView vector.