minor changes to the mlintro partial
added info about the hypothesis
added cost function
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite
Merge pull request #20 from jgpettibone/master

added hypothesis and cost function to mlintro
Merge pull request #21 from chughes87/master

Rotating random trees implemented.
Prepares our project for Heroku deployment