[Sass] Allow for CSS terms beginning with a hyphen.
[Sass] Allow for CSS terms beginning with a hyphen.

StephanieMak/sass,nazar-pc/haml,Galactix/sass,zaru/sass,zaru/sass,srawlins/sass,ridixcr/sass,ridixcr/sass,antonifs/sass,tangposmarvin/sass,jaroot32/sass,amitsuroliya/sass,Industrys/sass,xzyfer/sass,MetaAshley/sass,tenderlove/sass,14113/sass,liquidmetal/sass,saper/sass,cmpereirasi/sass,lmetla/sass,keithpitty/haml,Anshdesire/sass,Nzaga/sass,srinivashappy/sass,saper/sass,Ahnita/sass,srawlins/sass,MetaAshley/sass,Andrey-Pavlov/sass,nazar-pc/haml,StephanieMak/sass,Nzaga/sass,dylannnn/sass,oss-practice/sass,nicklima/sass,JuanitoFatas/sass,DanteKaris/sass,antonifs/sass,amatsuda/haml,tangposmarvin/haml,Galactix/sass,dylannnn/sass,Industrys/sass,cmpereirasi/sass,rammy7219/sass,Iamronan/sass,lmetla/sass,baiyanghese/sass,chriseppstein/sass,srinivashappy/sass,haml/haml,PMArtz92/sass,sideci-sample/sideci-sample-haml,dg1dd1ngs/haml,Andrey-Pavlov/sass,jaroot32/sass,HugoRLopes/sass,JuanitoFatas/sass,macressler/haml,DanteKaris/sass,xzyfer/sass,rammy7219/sass,Ahnita/sass,stewx/sass,askl56/sass,hcatlin/sass,modulexcite/sass,haml/haml,haml/haml,chriseppstein/haml,Iamronan/sass,OrenBochman/sass,HugoRLopes/sass,stanhu/haml,OrenBochman/sass,schneems/sass,concord-consortium/haml,nickg33/sass,keithpitty/haml,amitsuroliya/sass,haml/haml,macressler/haml,dg1dd1ngs/haml,stewx/sass,liquidmetal/sass,tangposmarvin/haml,nickg33/sass,danielfein/sass,Anshdesire/sass,danielfein/sass,modulexcite/sass,schneems/sass,hcatlin/sass,tangposmarvin/sass,askl56/sass,PMArtz92/sass,uniba/hamldoc_ja,briangonzalez/sass,chriseppstein/haml,nicklima/sass,stanhu/haml