Merge pull request #5 from USGS-CIDA/master

Up to date with execute changes that dblodgett made
Merge remote-tracking branch 'upstream/master'
modified FWGS to accept None. e.g., startTime; endTime
removed print lines in FWGS mod
working on dods replace, need test
Merge pull request #40 from jread-usgs/master

Allow 'None' for solo_inputs, which will not be used in FWGS

I'm merging these, and opening a jira to implement tests for them, If you have time go for it, if I get time I'll to the tests.