Hello world! test ex4

The first unit test in the thread
https://class.coursera.org/ml-005/forum/thread?thread_id=1783

Note: This is my very first commit to github. I want to make sure the
infrastructure is working. Also, a new world opens! =)
Merge branch 'ex5' of https://github.com/vasnake/coursera-ml005-unittests
Delete test_nnCostFunction.m

Found that vasnake already did this...
Merge branch 'ex4' of https://github.com/vasnake/coursera-ml005-unittests

Conflicts:
	ex4/test_ex4.m
Delete test_ex4.m
Merge branch 'master' of https://github.com/Troddel/coursera-ml005-unittests

Conflicts:
	ex4/test_ex4.m
Cleaning
Cleaning
Reverted
Merge branch 'master' of https://github.com/vasnake/coursera-ml005-unittests
computeCentroids: Test for pen-and-paper calc.

Added another test for Ex7 Test 2 "Compute Centroid Means". A simple
test that can be calculated by hand to check that the code is working.
Merge pull request #1 from Troddel/master

Simple test case for compute centroid means