had to remove -v for version because mlaunch can now take any additional parameters, like -vvv and pass it on to the mongod/s instances.
mlaunch can now take any additional arguments (like -vvv) and pass it on to the mongod/s instances.
added latest change for mlaunch.
Allow mlaunch to start multiple mongos with --mongos NUM. default is 1.

This fixes issue #30.
cleaned up CHANGES file. bug fixes (with issue numbers) first, then new features, minor bugs without issues.