clarify calendar, fix naming & 1 event per class

Links are to guides on how to add to both gcal and ical.

inputted names are now maintained on the downloaded calendar

now looks like this:
![screenshot 2014-04-11 22 26 50](https://cloud.githubusercontent.com/assets/2801090/2686154/f6a6a9be-c1e9-11e3-875a-61580af16a9b.png)