Version bump to 0.2.0-beta.
Add support, rate, and donate links to the plugin row meta.
Drop MO and PO files in favor of a single POT file.
Format the code a little.  Update some inline docs.
Update license to GPL v2+.
Inline doc updates.
Add license.txt file.
Add readme.md file.
readme.txt updates.
Version bump to 0.2.0.