Merge pull request #67 from jread-usgs/master

v0.2.6 new functions for plots and diagnostics
support for package metrics too.
Fixed issues I had with plot_meteo. Comparing string date/time with POSIXct date/time. Function example on my machine.
Ported glmtools to ncdf, from ncdf4 library which has so much weirdness.
There is no need to use the library function for a package you import in description.
Namespace needs to be attached to use "ls" on it. I missed tha initially.
Merge pull request #68 from lawinslow/master

Remove ncdf4 dependencies
removing center.buoyancy (dev rLA)
remove dev rLA, remove ncdf4
rm dev rLA
merge conflict