Remove ruby 2.1 from travis.yml and set ruby 2.2.4
Remove ruby 2.1 from travis.yml and set ruby 2.2.4
ramkumar-kr/spree_social,spark-solutions/spree_social,spree-contrib/spree_social,ramkumar-kr/spree_social,spree-contrib/spree_social,spree-contrib/spree_social,spark-solutions/spree_social,ramkumar-kr/spree_social,spark-solutions/spree_social