The Opencast start script does not work on Mac OS X

Steps to reproduce:

1. On Mac OS X, change to the checkout directory
2. Type "bin/start-matterhorn

Actual Results:

`
readlink: illegal option – f
usage: readlink [-n] [file ...]
ERROR: Could nor find Matterhorn jars. Exiting...
Error: Unable to access jarfile /bin/felix.jar
`
Expected Results:

Matterhorn is started.