Clean up the Using section of the README.
Clean up the Using section of the README.

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