Add swfobject.js v2.2 source for DFSG compatibility.

The Debian Free Software Guidelines require that source is included
(not just available) before they will accept projects into the main
Debian tree.
Merge branch 'dfsg' of https://github.com/kanaka/web-socket-js
Moving swfobject-src.js.
handle continuation frame from server #129
Recompiling SWF files.
Adding LICENCE.txt.
Renaming license file.
Fix for Issue #142

Fix for Issue #142
Firefox 26 removed event.initMessageEvent method so this had to be handled.
Using typeof(MessageEvent) to switch two ways to create MessageEvent.
Adding bower.json. #148
Updates to provide distinct FlashSocket type
Don't add ourselves to window; update to CDN path
Don't initialise automatically; get swf location directly from defaults
Updates to run in closure context; pass swfLocation as parameter
Merge branch 'ably-master' of github.com:ably-forks/web-socket-js into ably-master