Updated maven version in readme
Updated maven version in readme

lamhx393/stateless4j,rlsutton1/stateless4j,rossdanderson/stateless4k,ThinerZQ/stateless4j,craigday/stateless4j,rossdanderson/stateless4j,oxo42/stateless4j,rossdanderson/stateless4k,rossdanderson/stateless4j