Update classes.html.erb

adding ruby class verbiage. not finished.
Update classes.html.erb

finished updating rails class
Update classes.html.erb

tweaked ruby class description with p & strong tags
Update classes.html.erb

started front end freelancer
Merge branch 'master' of https://github.com/criskelly/pcsredesign into az-edits
finished FeF, starting bio
added al bio and photo
Merge pull request #22 from criskelly/az-edits

Rails & Front End class descriptions, Al bio and photo