Move the Haml::VERSION-generation logic into Haml.version.
Move the Haml::VERSION-generation logic into Haml.version.

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