Updated LINUX_README.txt to also have build notes for Mac OS X (courtesy of shibby1295 at bay12forums.com), and to also mention init.txt.
Link to shibby1295's forum post that I put into LINUX_README.txt: http://www.bay12forums.com/smf/index.php?topic=130675.0
Authored by: yetisyny 2013-09-13
Parent: [r723]
Child: [r725]
