added note about dependency resolution issue in Grails 3.1
added note about dependency resolution issue in Grails 3.1

grails-plugins/grails-spring-security-core,codeconsole/grails-spring-security-core,tcrossland/grails-spring-security-core,tcrossland/grails-spring-security-core,codeconsole/grails-spring-security-core,grails-plugins/grails-spring-security-core,tcrossland/grails-spring-security-core,tcrossland/grails-spring-security-core