Adding Aron Ahmadia to the roster
Merge pull request #503 from gvwilson/adding-aron-ahmadia

Adding Aron Ahmadia to the roster
Blog post about SWC's tutorial at SciPy 2013.
Rewriting descriptions of audience (lower expectations)
Merge pull request #504 from jiffyclub/swc-at-scipy2013

Blog post about SWC's tutorial at SciPy 2013
Merge pull request #505 from gvwilson/rewriting-audience-bios

Rewriting descriptions of audience (lowering expectations)
Fixing typo in Cozzini's link