Add Travis CI script
Fix CI script
Update CI script
Update README.md
Update README.md
Fix `alpha` documentation

The documentation on http://www.openfl.org/developer/documentation/api/source/content/flash/display/DisplayObject.html for `var alpha` is that of `accessibilityProperties`
Update build script
Add app_init
Set to 1.1.0 for development version
Use asset providers for openfl.Assets
Initial implementation of loadLibrary/unloadLibrary
Update to new 'AssetLibrary' system (stronger than asset providers)
Fix compatibility with older command-line tools
Use 'tools' instead of 'openfl_ver'
Implement Assets.loadLibrary
Wait for library.load
HTML5 Assets.getBytes() fix