tagging release 7-201711-EA

tagging release 7-201710-EA

[maven-release-plugin] copy for tag activiti-7-201709-EA

[maven-release-plugin] copy for tag activiti-7-201708HOTFIX-EA

[maven-release-plugin] copy for tag activiti-7-201708-EA

Tag build Activiti#7 branch 6.0-release as 6.0.0

Merge branch 'activiti6-rc1' of https://github.com/Activiti/Activiti.git

 into activiti6-rc1

update readme

Moved to Beta4 version

Move to Beta3 release version