[Java] Move licence to the bottom of README.
[Java] Move licence to the bottom of README.

real-logic/Aeron,mikeb01/Aeron,mikeb01/Aeron,mikeb01/Aeron,galderz/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,galderz/Aeron,mikeb01/Aeron,galderz/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,EvilMcJerkface/Aeron,galderz/Aeron,real-logic/Aeron