repository cleanup

Hi, I cleaned up the readme and the repository a bit for Meslo. If you accept this pull request, I think it will make the project a bit neater and more organized.

The commits themselves are commented; summary follows:

* clarify "DZ" version with "dotted-zero" instead of "DZ"
* rm compressed files; git will auto-pack them efficiently
* rm multiple old versions; git manages those for us
* rm spaces in file names
* simplify dir structure by removing unneeded "dist/"
* convert to markdown. textile is no longer common, .md is cleaner
* fix some typos ("particularily", "uniformely", etc.)

Thanks!