Updated readme for markdown output.
Oops - need a .md to parse Markdown - duh!
Sigh - actually add readme.md back into the repo.
More updates to the readme file.
Updated readme
Updated the composer.json file.
_get_plugin_basename_from_slug should check for a '/'

This addresses #147 (https://github.com/thomasgriffin/TGM-Plugin-Activation/issues/147)
Merge pull request #154 from jtsternberg/master

_get_plugin_basename_from_slug should check for a '/'
Merge pull request #1 from thomasgriffin/master

Master