Initial implementation of EventCountsOsc module.
Merge branch 'master' of https://github.com/sboeser/pisa into eventCountsOsc
Major revision to stage2. Implemented Aeff service in the right way now.
Minor changes, implementing meshgrid and writing the params out at the end of stage2.
Put scaling by nu_xsec_scale, etc. in EventRate.py
Merge pull request #5 from tarlen5/eventCountsOsc

Event counts osc