Added notes for compile and installation on Mac OS X 10.6 using clang binary (v3.1) and brew version of boost.
Added notes for compile and installation on Mac OS X 10.6 using clang binary (v3.1) and brew version of boost.

schwa-lab/libschwa,schwa-lab/libschwa,schwa-lab/libschwa,schwa-lab/libschwa