Update README for SUN JAVA 6

Should actually be added to the PasteBin file, for initalizing the build environment, but I have no access to that, hopefully developer who does have access will add this as this is PROBABLY the only known source of the correct Sun Java 6 JDK. It took me forever to find it, so now I don't have to hack the build setup files to allow a different version... this one passes.

http://www.webupd8.org/2012/11/oracle-sun-java-6-installer-available.html