Boot camps missing from calendar page

1. Go to http://software-carpentry.org/bootcamps/.
2. Scroll down to the calendar.
3. The list shows boot camps in May at Stanford, LBNL, UC Berkeley, and UC Davis (screenshot 1).
4. The Google Calendar *doesn't* show these boot camps when you page forward to May (screenshot 2).
![Screen Shot 2013-02-19 at 11 17 05 AM](https://f.cloud.github.com/assets/911566/172060/ec7389a8-7aaf-11e2-86bb-bdd687afa430.png)
![Screen Shot 2013-02-19 at 11 17 45 AM](https://f.cloud.github.com/assets/911566/172062/ef73fea8-7aaf-11e2-93df-b6039bdc922c.png)