Merge pull request #2 from jread-usgs/master

adding sensorQC v0.2.0 package
new NWCCompare and EflowStats builds
Merge branch 'master' of https://github.com/USGS-R/usgs-r.github.com

Conflicts:
	bin/windows/contrib/3.0/PACKAGES
	bin/windows/contrib/3.0/PACKAGES.gz
	src/contrib/PACKAGES.gz
new builds of NWCCompare and EflowStats
Updated packages required by new version of roxygen
Deleted old version of packages.
Updated package index for macs.
Updating mac binaries.
Added USGSHydroTools.
Added hydroTools mac.
dr
Updated dataRetrieval.
dr
Merge pull request #3 from jread-usgs/master

adding geoknife readme image
adding source for GDopp v0.1.0