fix for bug in salintity header test
Merge branch 'master' of github.com:jread-usgs/Lake-Analyzer
Merge remote-tracking branch 'upstream/master'
Merge pull request #17 from jread-usgs/master

Bug fix for salinity test for headers.
fixed TT.useSal=false bug when no .lvl file
Merge pull request #19 from jread-usgs/master

fixed TT.useSal=false bug when no .lvl file