add package info

[Borda]

What does this PR do?

reaction to #358

It would be fine to make a homepage for example from the main README file, as Github offers
see: https://guides.github.com/features/pages/
it is about %min and couple clicks... :)

[Borda]

btw, why is the package name pytorch_lightning not just torch_lightning the same way as PyTorch repo but imported as import torch

[Borda]

seems to he be failing on unrelated code...

[williamFalcon]

fixed tests. can you rebase master?

[williamFalcon]

@Borda I had to revert this because it broke the install.

(pl3) [user@machine5 pytorch-lightning]$ pip install numpy
Requirement already satisfied: numpy in /misc/scratch1/_Group/falcon/software/miniconda3/envs/pl3/lib/python3.6/site-packages (1.16.4)
(pl3) [user@machine5 pytorch-lightning]$ pip install -e .
Obtaining file:///home/user/Developer/pytorch-lightning
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 1:
   command: /home/user/media/falcon_scratch1/software/miniconda3/envs/pl3/bin/python /home/user/media/falcon_scratch1/software/miniconda3/envs/pl3/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpw4qf53yy
       cwd: /home/user/Developer/pytorch-lightning
  Complete output (22 lines):
  Traceback (most recent call last):
    File "/home/user/media/falcon_scratch1/software/miniconda3/envs/pl3/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py", line 207, in <module>
      main()
    File "/home/user/media/falcon_scratch1/software/miniconda3/envs/pl3/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py", line 197, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "/home/user/media/falcon_scratch1/software/miniconda3/envs/pl3/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py", line 54, in get_requires_for_build_wheel
      return hook(config_settings)
    File "/tmp/pip-build-env-30cwdsvd/overlay/lib/python3.6/site-packages/setuptools/build_meta.py", line 146, in get_requires_for_build_wheel
      return self._get_build_requires(config_settings, requirements=['wheel'])
    File "/tmp/pip-build-env-30cwdsvd/overlay/lib/python3.6/site-packages/setuptools/build_meta.py", line 127, in _get_build_requires
      self.run_setup()
    File "/tmp/pip-build-env-30cwdsvd/overlay/lib/python3.6/site-packages/setuptools/build_meta.py", line 237, in run_setup
      self).run_setup(setup_script=setup_script)
    File "/tmp/pip-build-env-30cwdsvd/overlay/lib/python3.6/site-packages/setuptools/build_meta.py", line 142, in run_setup
      exec(compile(code, __file__, 'exec'), locals())
    File "setup.py", line 10, in <module>
      import pytorch_lightning
    File "/home/user/Developer/pytorch-lightning/pytorch_lightning/__init__.py", line 1, in <module>
      from .trainer.trainer import Trainer
    File "/home/user/Developer/pytorch-lightning/pytorch_lightning/trainer/trainer.py", line 9, in <module>
      import numpy as np
  ModuleNotFoundError: No module named 'numpy'

[williamFalcon]

Please fix, resubmit PR and test (inluding pip install -e .)

Thanks!