use ruby 2.1.3 for travis
use ruby 2.1.3 for travis

frootloops/coderwall,trinitronx/coderwall,agileknight/coderwall,frootloops/coderwall,pushkar-mishra/coderwall,sekouzed/coderwall,pombredanne/coderwall,seuros/coderwall,AVGP/coderwall,ronaldotijucas/coderwall,seuros/coderwall,ronaldotijucas/coderwall,wiserfirst/coderwall,pombredanne/coderwall,sekouzed/coderwall,ggaabe/coderwall,ggaabe/coderwall,wiserfirst/coderwall,sekouzed/coderwall,alouanemed/coderwall,santoshdeshpande/coderwall,pushkar-mishra/coderwall,alouanemed/coderwall,pushkar-mishra/coderwall,pombredanne/coderwall,seuros/coderwall,sekouzed/coderwall,ggaabe/coderwall,wiserfirst/coderwall,coderwall/coderwall,agileknight/coderwall,coderwall/coderwall,alouanemed/coderwall,AVGP/coderwall,DylanKojiCheslin/coderwall,AVGP/coderwall,ronaldotijucas/coderwall,assemblymade/coderwall,wiserfirst/coderwall,DylanKojiCheslin/coderwall,pombredanne/coderwall,alouanemed/coderwall,coderwall/coderwall,trinitronx/coderwall,agileknight/coderwall,trinitronx/coderwall,assemblymade/coderwall,trinitronx/coderwall,ronaldotijucas/coderwall,assemblymade/coderwall,santoshdeshpande/coderwall,assemblymade/coderwall,DylanKojiCheslin/coderwall,santoshdeshpande/coderwall,seuros/coderwall,frootloops/coderwall,coderwall/coderwall,pushkar-mishra/coderwall,agileknight/coderwall