add camera streaming blocks (fix #460)
add simple motion detection
add motion reporters
tidy up the camera block code
camera block bugfixes
add IE camera block support
add camera streaming predicate
add camera streaming predicate
improve camera block error handling
merge upstream
Merge pull request #1 from jmoenig/master

Sync fork to original repository
Merge pull request #2 from Gubolin/issue_460

Merging pull request: add camera blocks (fix #460)
Fixed auto-merge conflicts.
Added video playback from URL initial support.
Added call to pause() on <video> to avoid unnecessary background processing
Mirrors the webcam image allowing a more natural interaction with the stage.
Initial setup for rigid bodies
Initial implementation of Velocity Verlet Integration method
Merge remote-tracking branch 'origin' into rigidbody
FIXED: After stopping the video playback it would clear the stage but sound kept playing on the background.
Added video loop by default, this will be split into two blocks in the future, one for one time playback, another for loop playback.