Integrate with conda install

[whitead]

Test out installing hoomd-blue with conda, tensorflow with pip, and see if plugin can be made without compiling hoomd-blue.

[dilnoza92]

I installed hoomd-blue with conda and tensorflow with pip. In hoomd-tf directory, I created a build directory and inside it I ran cmake. There was no error. However, in python when I imported hoomd.tensorflow_plugin, I got the following error:
"
File "", line 1, in
File "/anaconda3/lib/python3.6/site-packages/hoomd/tensorflow_plugin/init.py", line 13, in
from .tfcompute import tfcompute
File "/anaconda3/lib/python3.6/site-packages/hoomd/tensorflow_plugin/tfcompute.py", line 4, in
from hoomd.tensorflow_plugin import _tensorflow_plugin
ImportError: cannot import name '_tensorflow_plugin' "