F90GIO-v2.1

Add group reading operations (Resolve #9) (#14)

* Add group reading operations & examples
* update README.md

f90gio-v2.0.2

The last release that includes makefile

f90gio-v2.0.1

Same as f90gio-v2.0 except adding more configurations

f90gio-v2.0

1. Add Fast I/O libs for NetCDF and HDF5 files
2. Add examples about how to use Fast I/O libs
3. Use CMake as default building tools

f90gio-v1.1

bug fix:

1. modify the Makefile so the gfortran compiler can be
   used now. Codes have been tested on ifort on Mac, and
   gfortran on linux