First release on the chrome web store

This is the first version released on the chrome web store. You can find the extension at UW Course Guide+.

Short description:

View additional information in the UW-Madison Course Guide, like Rate My Professor data and historical grade distributions.

Extended description:

This extension adds a number of features to the UW-Madison course guide to make it easier for students to sign up for classes.

Features include:
• Grade distributions and average GPAs displayed in the course guide
• RateMyProfessor information next to the professor's name 
• Detailed graphs on the course page showing the historical grade and professor information for that class
• Class locations shown on a map make it easy to see where you have to go

Iteration 2

v0.2

Merge remote-tracking branch 'origin/master'