Start unit tests
Merge branch 'mma-dev' into unit-tests
Merge commit 'd51398ab1cbbc32a8ec8dfbb074299d6b2525c70' into unit-tests
Merge branch 'mma-dev' into unit-tests
Add test for complex 5D
move package loading out of test
Update README.md

Clarify installation instructions.
Merge partially from commit b59361d2. Revert deletion of data types file
Merge commit 'ae1572ff1388b97d4aeda355c2766bb657c7da70' into mma-dev
Implement action/message/warning/error logging
Implement settings file
Convert $DefaultMATLABDirectory to a private symbol, since SetOptions[MATLink, … ] does its equivalent.
A few more log items
Convert $ReturnLogicalsAs0And1 to an option and make the symbol private
Use structHandleQ instead of multiple MatchQs
Remove datatypes
Auto-detection of MATLAB and Mathematica locations in Makefile for OS X
Temporary auto-detection of MATLAB in mengine.sh (to be replaced by info read from settings file later)