Version bump to 0.5.8.pre
README and CHANGELOG updated to Markdown format
Setup Travis-CI to test against Ruby 2.0.0
Security Fix: Updated Rails to 3.2.12
ActionMailer can now also be configured to send email through NTLM
Updated Contour to 1.2.0.pre8
Ruby 2.0.0 compatible!

Removing allow_failures for Ruby 2.0.0, and will maintain Ruby 2.0.0 compatibility going forward
Version 0.5.8 finalized