Use jruby 9.1.8.0 in Travis
Use jruby 9.1.8.0 in Travis

gogovan/activeadmin,maysam/activeadmin,vraravam/activeadmin,javierjulio/activeadmin,waymondo/active_admin,mrjman/activeadmin,gogovan/activeadmin,gogovan/activeadmin,mauriciopasquier/active_admin,wspurgin/activeadmin,waymondo/active_admin,javierjulio/activeadmin,deivid-rodriguez/activeadmin,varyonic/activeadmin,vytenis-s/activeadmin,vytenis-s/activeadmin,SoftSwiss/active_admin,activeadmin/activeadmin,wspurgin/activeadmin,wspurgin/activeadmin,cmunozgar/activeadmin,varyonic/activeadmin,deivid-rodriguez/activeadmin,activeadmin/activeadmin,mrjman/activeadmin,vraravam/activeadmin,mauriciopasquier/active_admin,mauriciopasquier/active_admin,siutin/activeadmin,siutin/activeadmin,maysam/activeadmin,SoftSwiss/active_admin,maysam/activeadmin,cmunozgar/activeadmin,vraravam/activeadmin,deivid-rodriguez/activeadmin,waymondo/active_admin,varyonic/activeadmin,mrjman/activeadmin,cmunozgar/activeadmin,javierjulio/activeadmin,SoftSwiss/active_admin,activeadmin/activeadmin,siutin/activeadmin,vytenis-s/activeadmin