how I create a conda environment for cmapPy and python 3 #57

Not sure if this useful for others / including in docs, but here's how I create a conda environment for cmapPy in python 3. I mention this b/c I have done it other ways and ended up not having the hdf5 command line tools in the environment (which I find useful).

0. conda create -n cmapPy3 python=3 scikit-learn scipy numpy seaborn matplotlib statsmodels pandas jupyter sympy h5py
1. conda activate cmapPy3
2. pip install cmappy
3. try it out!
   0. should have hdf5 command line tools

(NB: not installing h5py via conda, and instead having pip install it as a dependency of cmappy caused me to not have the command line tools for whatever reason). Obvs this also includes some other analysis libraries / tools I find useful.