twitter feed helper. Includes for the following:
- linkfy tweet content url
- linkfy tweet content username
- linkfy tweet content hashtag
- make pretty dates

linkify methods come from: 
http://jes.al/2009/05/how-to-parse-twitter-usernames-hashtags-and-urls-in-c-30/

pretty date method comes from: 
http://snipplr.com/view/53628/prettydate

Spring.NET Social Twitter project used to get tweets
https://github.com/SpringSource/spring-net-social-twitter