mention the slack channel
mention the slack channel

BenjaminMalley/graphql-java,fderose/graphql-java,graphql-java/graphql-java,fderose/graphql-java,kroepke/graphql-java,dminkovsky/graphql-java,blevandowski-lv/graphql-java,graphql-java/graphql-java,blevandowski-lv/graphql-java,dminkovsky/graphql-java