added ex2 solutions
Merge branch 'master' of https://github.com/intermalta/machineLearning

Conflicts:
	machine-learning/mlclass-ex2-007/mlclass-ex2/costFunction.m
	machine-learning/mlclass-ex2-007/mlclass-ex2/costFunctionReg.m
	machine-learning/mlclass-ex2-007/mlclass-ex2/ex2_reg.m
	machine-learning/mlclass-ex2-007/mlclass-ex2/plotData.m
	machine-learning/mlclass-ex2-007/mlclass-ex2/predict.m
	machine-learning/mlclass-ex2-007/mlclass-ex2/sigmoid.m