Length update
- Removed Video::length attribute
- Added MPlayer::getCurrentVideoLength()
- Added PluginMPlayerAPI::getVideoLength(), as a DEBUG function (JS exposed).
Merge branch 'develop' of https://github.com/heffebaycay/mplayer-plugin into feature/videoLength

Conflicts:
	MPlayer.cpp
Merge pull request #12 from heffebaycay/feature/videoLength

Video Length changes