Merge pull request #5 from OHI-Science/master

updated src/R/common.R to proper loading sequence so dplyr summarize works
updated data_prep.R with name_to_rgn.r and gapfill_georegion.r for World Bank data. Saved new files--cannot access attribute table at this point though. Will figure out Wednesday
pushing this file
Merge pull request #48 from jules32/master

World Bank 2014 data almost there--attributes table access problem still to fix