create_anomalies: Create Anomaly File Function
In ssobie/monthlyDS: Monthly anomaly downscaling with Climate Imprint

Calculates monthly anomalies of daily values relative to a climatological period.

1 2	create_anomalies(var.name, series.file, read.dir, anomaly.file, write.dir, monthly.clim, buffer.edge)

`var.name`	Variable name for the netcdf file.
`series.file`	File name for input netcdf file.
`read.dir`	Location for the input file.
`anomaly.file`	File name for anomaly netcdf file.
`write.dir`	Location for the anomaly file.
`monthly.clim`	Monthly climatologies for the baseline.
`buffer.edge`	Fill missing data at edges DEFAULT=NULL