Adds Python-PouchDB as an external project

Like PouchDroid, but for another dev environment. Disclaimer: my project, so I'm biased. Feel free to alter description/not add it.
(#2206) - Replace goodfirstpatch with help wanted
(#2185) - Add ie to allowed failures
(#2185) - Fix typo in travis.yml file
(#1131) - Document expected _local 404 thrown
(#1622) - test in phantomjs

Also add the ability to specify whether or
not to use the ES5 shims, since phantomjs
needs them.
(#2193) - deprecate latest for now
(#2250) - fix small leveldb memory leak
(#2246) - Rename publish.sh to release.sh
(#2242) - remove custom events dep
(#2231) - document pouchdb-plugin-seed
(#2229) - fix wrong code in blog post
(#2238) - document replication error listener, add examples
(#2035) - get rid of cors proxy
(#2231) - fix typo in docs
(#2245) - bump version number
(#2249) - switch es3ify back to standard path
Revert "(#2035) - get rid of cors proxy"

This reverts commit 9d4435de21d996a0a2271a217479af916be05519.
(#2275) - fix overflow-x in chrome

The github ribbon needs to be contained!!11
(#2269) - Update faq.md

Fixed a missing ' on the last item of CouchDB Differences.