Merge pull request #10 from OHI-Science/master

updating
added read_git_csv() function
updated documentaiton on read_git_csv
using Julie's fix for gapfill_georegions

Merge branch 'master' of github.com:bbest/ohicore

Conflicts:
	R/gapfill_georegions.R
added .onLoad function to ensure dplyr functions preferentially used over plyr, ie mask plyr functions
Merge pull request #160 from bbest/master

read_git_csv, onLoad for dplyr loading