fix specific humidity variable name
began implementing BioCro met2model function
reverted to looping through years for model2netcdf.BIOCRO
used correct argument 'v' to ncvar_add in met2CF.csv function
updated get.ncvector to transform precip with units written either as 'kg/m2 ..' or 'kg m-2 ..'
Merge branch 'master' into biocro-module2

Conflicts:
	models/biocro/R/model2netcdf.BIOCRO.R
revised test for 1700-01-01 start date in load.cfmet to make it less prone to failing
allow biocro.Rscript to read from existing weather file that has been converted to required input format
altered syntax for mResp (a vector) in xml to simplify reading / specification
renamed parameter chi -> chi.l in salix.xml defaults
changed BioCro default atm CO2 to 400ppm
added data.table to biocro.Rscript
updated data.atm documentation
changed specification of mResp in BioCro salix defaults
Merge branch 'master' into biocro-module2
Merge branch 'master' into biocro-module2
Merge branch 'update_version' into biocro-module2
Merge github.com:PecanProject/pecan into biocro-module2
updated BioCro met conversion functions

Merge branch 'biocro-module2' of github.com:PecanProject/pecan into biocro-module2

Conflicts:
	models/biocro/inst/extdata/defaults/salix.xml
added "read.config.BIOCRO" function