[Haml] Add a few headers to haml/util.rb.
[Haml] Add a few headers to haml/util.rb.

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