working on mac portability, can now ls but still hangs on cds into filesystem
improved mac support (still buggy, but limited to cd into mp3 directory with subsequent lss)
fixed main to allow both debug and single thread args (-d -s). Mac problems stemmed from lack of multithreaded support in fuse4x (should switch to osxfuse at some point)
Changed readme to reflect move to osxfuse, updated cmake to look for fuse in more places, added notes on running on mac
merged mac changes from main