This is in case anyone is wondering what folder to place the zip file in since I didn't really specify it before.

PC
C:\Users\*current user*\AppData\Local\Harebrained Schemes\Shadowrun Returns\ContentPacks

Mac
Users/*current user*/Library/Application Support/Harebrained Schemes/Shadowrun Returns/Content Packs

Here is the wiki link for a more detailed file location: http://shadowrun-returns.wikispaces.com/Content+Sharing