Camera Open test

Added initial canvas code

fixed the canvas functions so it actually works;)

CamCaptureTest checks that frames are non near-black.
Fixed according to comments
fixed refactor errors + comments from reviewers
fixed spelling mistake
fixed latest comments
Merge remote-tracking branch 'origin/master' into cameratest

Conflicts:
	samples/web/content/testrtc/index.html
	samples/web/content/testrtc/js/main.js
Align [INFO] to right as used in camresolutiontest.js
Merge pull request #129 from GoogleChrome/cameratest

Camera Open test
Changed black frame detection to average-luma based. Lowered threshold.
andresp@ comments
Convert from expectEqual => expectEquals.
Merge pull request #136 from GoogleChrome/cameratest2

Changed black frame detection to average-luma based. Lowered threshold.
Added link to ga.js
Started adding files for Grunt and Travis
Merged README.md
Merge pull request #139 from samdutton/master

Added link to ga.js
Update README.md

Removed Travis build check image (added inadvertently).
Updated README.md links to match new structure
Removed redundant Travis build badge
Fixed peerconnection/states link