Tensorpy

Sync setup.py file

Update requirements

Update requirements
Update Docker integration
Simplify installation
Update docs

The time has come for TensorPy to support both Python 2.7 and Python 3.*

The latest version of the Python Imaging Library (Pillow) appears to have a bug, which has caused TensorPy to break when downloading images and converting those images to the correct image format. To fix this, I have locked the Pillow version to 4.1.1 (errors appeared when using TensorPy with Pillow version set to 4.2.1). Sorry for any inconvenience! I have locked down dependency versions to prevent issues in the future.

Simplify classification code.
Also lets the "classify" method & command do more than before.
Input types now include: Image URL, Web URL, image file path, and folder path.