[TIMODOPEN-315] Update to Flurry 5.0.0.a

Tested out in an app, no crashes, saw the reports go across fine in the logs. There are changes to the API that we could surface, but this will be a good stopgap to get apps releasable.
Use 3.2.3.GA
Try User Directory
Use User Dir for Ti.xcconfig
Use install.sh
Merge pull request #12 from dawsontoth/update_to_500a

[TIMODOPEN-315] Update to Flurry 5.0.0.a