Use RubyGems 2.2.1 for Travis.
Use RubyGems 2.2.1 for Travis.

Travis is currently defaulting to 2.2.0 which seems to be buggy on
Ruby 1.8.7.

zaru/sass,Iamronan/sass,PMArtz92/sass,Anshdesire/sass,antonifs/sass,askl56/sass,amitsuroliya/sass,StephanieMak/sass,Industrys/sass,rammy7219/sass,saper/sass,Galactix/sass,schneems/sass,nickg33/sass,xzyfer/sass,ridixcr/sass,DanteKaris/sass,modulexcite/sass,srinivashappy/sass,Andrey-Pavlov/sass,Ahnita/sass,modulexcite/sass,askl56/sass,stewx/sass,Ahnita/sass,danielfein/sass,rammy7219/sass,briangonzalez/sass,srawlins/sass,Iamronan/sass,oss-practice/sass,Anshdesire/sass,Nzaga/sass,Nzaga/sass,srawlins/sass,hcatlin/sass,cmpereirasi/sass,Industrys/sass,dylannnn/sass,tangposmarvin/sass,hcatlin/sass,cmpereirasi/sass,zaru/sass,jaroot32/sass,OrenBochman/sass,HugoRLopes/sass,xzyfer/sass,MetaAshley/sass,danielfein/sass,stewx/sass,Galactix/sass,Andrey-Pavlov/sass,nickg33/sass,OrenBochman/sass,tangposmarvin/sass,amitsuroliya/sass,liquidmetal/sass,lmetla/sass,PMArtz92/sass,HugoRLopes/sass,saper/sass,srinivashappy/sass,dylannnn/sass,JuanitoFatas/sass,lmetla/sass,MetaAshley/sass,DanteKaris/sass,StephanieMak/sass,schneems/sass,nicklima/sass,antonifs/sass,liquidmetal/sass,baiyanghese/sass,nicklima/sass,jaroot32/sass,ridixcr/sass,JuanitoFatas/sass