Update README.md
refine mlpPred.m
Merge pull request PRML#33 from sth4nth/master updated readme
Merge pull request PRML#31 from sth4nth/master 1.0 update
Merge pull request PRML#28 from sth4nth/master refined all docs, all test passed
Merge pull request PRML#27 from sth4nth/master fixed issue PRML#15