Added GoAT.sh script: Allows to run goat from any directory
Modularized CMakeLists

Introduces lists for the common header and cc files and then uses those
in the executable targets. This makes it easier to add files to that are
common to all targets.
Starting my own pi0 class
Personal config choices
Removed bad continue from my class
Revert to GH1s now that they work for non-subtracted things
Edited CMakeLists for my physics class to reflect new histogram classes from Patrik