began converting met_functions.R to use CF variable names
updated met_functions.R to use CF variable names; added arbitrary time step to cruncep_hourly function (works for subdaily, fixes redmine #2031)
Merge branch 'master' into cf_varnames
moved met_functions from biocro module to PEcAn.data.atmosphere, but they are not documented or exported at this point
updated data.atmosphere documentation
added vignette and data for comparing narr (daily, 3hourly), cruncep, and local met station
merge