Issue 2264: update readme

https://code.google.com/p/otwarchive/issues/detail?id=2264

This is a documentation change, but since it's a very visible documentation change, please give feedback if anything seems missing or incorrect or too much information. :) The link to the footer is also updated to point to the same license (GPL v2).
We could be gender neutral with their own archive. However I am happy to leave as is if we want to balance things the other way a bit