Merge pull request #2 from USGS-R/schristel-USGS

Merge pull request #1 from USGS-R/master
edited the second example in fxn_MapColor
Merge branch 'master' of github.com:USGS-R/GSHydroTools
forgot to right Rd files with roxygen...had to rebuild the package so Rd files could be updated
Merge pull request #3 from USGS-R/master

updated Rd files