Adding:
 - netCDF utilities as function module
 - python script to call all netCDF utilities

Modifying:
 - wiki file according to new adds
Adding:
 - Fortran folder
 - Modifying main.wiki accordongly
Adding:
 - lon/lat performance in write_netCDF.f90 fortran code

Fixing:
 - Issue in python output specification in spacemean
Adding:
 - namelist file for write_netCDF
Modifying:
 - Fortran wiki with namelist use
Fixing:
 - variable outputting in spacemean
Merge pull request #5 from LluisFita/master

Add Fortran & Python NetCDF examples