Merge pull request #36 from jread-usgs/master

handling for plot output
Merge pull request #37 from jread-usgs/master

New function w/ generic rLA methods
Merge pull request #42 from jread-usgs/master

adding image example for plot
Merge pull request #43 from jread-usgs/master

readme changes for install directions
Merge pull request #44 from jread-usgs/master

updates to readme for function list and link to GLM
Merge pull request #45 from jread-usgs/master

ncdf4 install instructions.
Merge pull request #46 from jread-usgs/master

requires v 3.0+ of R
Merge pull request #47 from jread-usgs/master

clean up for ncdf4 libs and instructions
Merge pull request #48 from jread-usgs/master

code formatting
knocked down default fig res to 200 dpi