Fixing dependecy, mom4-utils is now mom-utils
Fixing the mom-utils related call on the tutorial.
Fix mom-utils dependency, add new dep for rec_env

 * Move some parts of environ.py to a new package, rec_env.
 * Fix formatting in some docs.
 * Bump version to 1.0.1
Update tutorial.rst

Using mom-utils from PyPI
fixing conflicts for merge