Bare minimum required to make email responsive on small screens

on screens less than 480px
- makes tables 100% width
- logo image scales
- gave events table some padding and valign text to top to make more readable
Forgot to add: <body yahoo="fix">

http://www.emailonacid.com/blog/details/C13/stop_yahoo_mail_from_rendering_your_media_queries
Merge pull request #1 from pidgpowell/master

Bare minimum to make email responsive on small screens.