Merge pull request #43 from dermen/master

pull me so we can install on odin...
added omp to correlation
removed no omp from travis install; should be testing w/omp
added omp to bcinterp -- not much success
more omp, this time for cpuscatter, working on #22
Merge branch 'master' of github.com:tjlane/odin
skipping flaky test
sim and pysim
pysim and sim and updates