Updating to have Travis only test JRuby 1.6.8 for now
Updating to have Travis only test JRuby 1.6.8 for now

kjg/mail,zacholauson/mail,EdwardPantoja/mail,EdwardPantoja/mail,wktk/mail,jeremy/mail,zacholauson/mail,carsonreinke/mail,pushrax/mail,Schniz/mail,kert-io/mail,benmmurphy/mail,schneems/mail,pjskennedy/mail,0x00evil/mail,jeremyevans/mail,smallspark/mail,agaridata/mail,kaineer/mail,missive/mail,schneems/mail,agaridata/mail,yujinakayama/mail,jonkgrimes/mail,planio-gmbh/mail,mikel/mail,carsonreinke/mail,jeremyevans/mail,benmmurphy/mail,jeremy/mail,schepedw/mail,owenr/mail,wktk/mail,pushrax/mail,0x00evil/mail,jonkgrimes/mail,kjg/mail,schepedw/mail,kert-io/mail,smallspark/mail,kaineer/mail,pascalbetz/mail,pjskennedy/mail,kainlite/mail