refactor to work with new imageio-ext refactor
merged NetcdfIR in geotools part from imageio-ext
moving gribs up to geotools + fix on ucar*Reader inside SpatioTemp*
all of netcdf, hdf and grib up to geotools level
rename better Unidata instead of Ucar + last cleanups
adding missing packages
adding slice indexing for file based datasets
Merge pull request #10 from moovida/master-multidimraster

netcdf merge into geotools