Fix errors in README
Allow everything to work with `.settings` file, not just ENV
variables.
Mention memcached and couchdb dependencies
Updated settings file: include socket_host
Merge pull request #246 from sebbacon/fix-non-heroku-deploy

Fix non heroku deploy
Merge branch 'master' into feature-yaml-settings

Conflicts:
	.settings.sample
	lib/base.rb