Modification to the Checkers AI project.

Removing the homeworks from class.

Restructured to have the files in a single directory.
Pruning the Checkers AI Project.

Removing the directories from computer science class.
Added 2 files, initial test suite file and neural network.

Have the file for conducting the tests for the project and the file to
build the neural network from.
Modified Makefile

Added target for building and running the tests of the project.
Modified Makefile

Added in compiler flag to use pipes instead of using temp files to speed
build time.

Added a tests target that would compile the Catch unit test frameworks
for the testing of the project.

Also, cleaned up some of the white space formatting of the text.
Modified neural_network.hpp

Added the class structure for the neural network, include guards, and
moved the sigmoid into its own function.
Modified tests.cpp

Initial test cases for the evaluation of the neural network class.