gaelforget/gcmfaces: Shift to sphinx-based documentation via readthedocs
- documentation is now made available via http://gcmfaces.readthedocs.io/en/latest/
- documentation contents remain to be merged to master branch under github.
- this release also involves a few minor code changes and one new routine (calc_UV_zonmer.m).
- this release took place just before retiring the old, cvs repository and documentation.