added: lrCostFunction tests
added: oneVsAll tests
added: comments
added: predictOneVsAll tests
added: simle tests for NN predict function
Merge pull request #4 from vasnake/ex3

ex3 from vasnake
Neural network tests
Merge branch 'master' of github.com:cod3monk3y/coursera-ml005-unittests

Conflicts:
	ex3/test_ex3.m
Neural Network boolean tests
Merge remote-tracking branch 'upstream/master'

Conflicts:
	.gitignore
	ex3/test_ex3.m
	ex3/test_lrCostFunction.m
	ex3/test_predict.m