Merge pull request #75 from videojs/feature/version-bind

bind swf version to package.json version
Merge pull request #76 from t2y/master

Added onBWCheck method for the RTMP streaming
update package.json to include missing grunt-npm
Merge pull request #78 from videojs/hotfix/grunt-npm

update package.json to include missing grunt-npm
cleanup for build
Release 4.3.5