Fixed a typo in documentation + added a warning and a tip about GCC 4.2 on a Mac
From: Dmitriy Morozov <morozov@cs.duke.edu>Date: Wed, 06 Feb 2008 16:45:13 -0500State: newSubject: About section in READMEMessage-Id: <e6d9deee8fbd81a5-0-artemis@metatron>Add "About" section to the README file.