montly accumulation test script

new content yet to be merged into 'accumulate attributes'
Merge branch 'master' of git://github.com/jjvanderwal/NCCARF_freshwater_refugia
added conditions for accum
Merge branch 'master' of git://github.com/jjvanderwal/NCCARF_freshwater_refugia
resolved a merge issue by copying and saving current content from github
resolving merge issue.  blargh
still trying to resolve