New version (v0.4-beta)

[Paco Zamora Martínez]

A new version of luamongo has been released. It breaks compatibility with older scripts in the same way as Lua 5.2 do with Lua 5.1. The major feature of this new version is the addition of:

- Lua 5.2 style, without global variables.

- Addition of _VERSION and _NAME fields in the mongo table.

- Addition of GridFileBuilder, which allows to build GridFS files as it was a stream.

I hope to continue with the administration of the repository, and new contributions will be wellcome! :-)