Merge pull request #2 from vasnake/ex1

Ex1
added: costFunction tests from https://class.coursera.org/ml-005/forum/thread?thread_id=943
added: predict tests from https://class.coursera.org/ml-005/forum/thread?thread_id=943
fixed: costFunction tests location
fixed: print X while testing
Merge pull request #3 from vasnake/ex2

Ex2 update from vasnake
EX3 one-vs-all
Added test_predictOneVsAll
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