[TxMt] MultiMarkdown

[Gerd Knops]

Fletcher's bundle was a fork from the Markdown bundle. As such it clobbered the Markdown bundle itself, and the included Markdown syntax was at least partially broken.

I created a fork with the following changes:

- Renamed to MultiMarkdown
- Removed all commands/snippets/macros/support files duplicated from the Markdown bundle
- Removed broken Markdown syntax
- Cleaned up all UUIDs to not reference the markdown bundle
- Added dependency on the Markdown bundle (for the syntax)

After a cursory check everything seems to work as it should.

If everybody agrees that this is the way to go, could we add this bundle to the textmate namespace on github and make it "official"? The README would need a few changes: updated link, installation instructions for the pre-requesits (MMD3 itself, LaTEX etc if desired).

	https://github.com/gknops/MultiMarkdown.tmbundle

Gerd