Production install instructions seem to be missing a required step for mysql...
Created by: kgodwin
In Ubuntu 12.04 LTS [at least the Digital Ocean image] we need libmysqlclient-dev to build the mysql gem used @ sudo -u git -H bundle install --deployment --without development test postgres aws
I'd suggest you add this before the line to install the mysql bundle in the install instructions: apt-get install -y libmysqlclient-dev