Update environment.yml to reflect dependencies not the ea envt in it's total form about earthpy

[mbjoseph]

Hey @lwasser - yes until we move away from conda, the build on Travis still expects to find an environment.yml file. The relevant lines are here: https://github.com/earthlab/earthpy/blob/master/.travis.yml#L19-L20

If you wanted to trim down the dependencies in that file to be limited to the dependencies of the earthpy package, that would probably be good. It should make our builds faster on Travis. While we are at it, we should also not use earth-analytics-python as the name for the environment associated with earthpy, to avoid confusion with your earth analytics python environment that is in a separate repo.

[lwasser]

ok great. this is what i was thinking @mbjoseph I will change this issue to
Update environment.yml file to serve as a dependency definition file for this package / travis build.

[lwasser]

eeks -- well i messed up and didn't see i was on master but this has been atleast cleaned up here

[lwasser]

i think we can get rid of all of this:
can you think of any reason we migth want it @mbjoseph ?

  # Jupyter Environment
  - notebook
  - ipython
  - jupyter_contrib_nbextensions
  - nb_conda
  - jupyterlab

[lwasser]

yml file has been updated here renamed the envt, removed items that don't relate to this package and updated travis build accordingly. Closing this for the time being but we can reopen if need be.