Fixed bug un HEARTBEAT and active it by default in config.json
show paella version in help plugin
Move the playbackrate plugin to the left
Change fullscreen button image when player is in fullscreen
 Qualities plugin now shows the current vertical resolution as button label
Added new 16/9 and 4/3 profiles.
clean code + split
Merge pull request #31 from sersanor/timeLinePreview

Added image overlay to timeline
New background icon image added
background image added to defines.less
icon file modified
Plugin's css modified
Merge branch 'master' of https://github.com/polimediaupv/paella into icon-refactor
style improvements
Border Adjustment
Added new example with blackboard images
Added image source to the presenter source video
Added new video demo to the index.html page
New icons added
Social plugin icons modified