Adding DNS configuration to slidelint website.
Fixing wording / spelling.
added instructions on how to create the slidelint docker image
Moving to rackspace.
Adding initial attempt at a Dockerfile for slidelint.

Fixes #4.
Merge remote-tracking branch 'enkidulan/master'
Small README fixes.
Small fix to docker file.
Adding mailgun configuration.
Adding an extra comment to sshhosts file.
Using pdns.
Adding new domains to .gitignore
Merge remote-tracking branch 'origin/master'
Temporarily use mithro/slidelint-box until timvideos/slidelint-site-box is working.
Fixing README.rst inside setup.py
Merge remote-tracking branch 'ns1/master'
Merge remote-tracking branch 'mithro/grammar-fixes'