Actionscript3 Implementation

I have been working on a project which consists in a frontend created in as3 and a backend in node.js.
We decided to create the communication protocol based on msgpack specification. However, the format hasn't a official implementation in as3, thus i created my own version.
Here is the repository that i have used: https://github.com/loteixeira/as3-msgpack
The current version is 0.4.1 and at current release, encoding and decoding are fully functional. Besides, the library is extensible, it allows the user to add it own encoder/decoder functions.
The classes allow to read/write on IDataInput/IDataOutput interfaces (ByteArray, FileStream, URLStream, Socket, etc).
I'm asking to include this version in the official set of implementation, even because i'm planning developing further (next goal is streaming).
Thanks

PS: I'm sending this pull request based on the FAQ of MessagePack website: "If the repository doesn't have your favorite language directory, the implementation for that language is currently missing. Of course, you could be the author  Please check the Format specification and send the pull request to msgpack github repository."