bump to v1.5.1, add new builds

Add new v1.5.0 builds

Merge branch 'master' of https://github.com/GoodBoyDigital/pixi.js

pixie files update

Modified package version to 1.4.2

v1.4.1 builds

Merge bugfix from 'dev'

Rebuild the latest version

Add new builds

Merge pull request pixijs#176 from ddsol/patch-1

new Image() error: Fixed bug link