small fix for the shell scripts if JAVA_HOME is not set

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@1435 85d21ef8-add0-11de-ae77-5bfb9c5a3f34
typo in readme

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@1436 85d21ef8-add0-11de-ae77-5bfb9c5a3f34