Don't force polling.
Don't force polling.

We want to be able to use other Listen plugins if we're using the
Listen gem.

hcatlin/sass,tangposmarvin/sass,PMArtz92/sass,srawlins/sass,Andrey-Pavlov/sass,saper/sass,Andrey-Pavlov/sass,tenderlove/sass,JuanitoFatas/sass,xzyfer/sass,Nzaga/sass,saper/sass,antonifs/sass,oss-practice/sass,Galactix/sass,OrenBochman/sass,dylannnn/sass,HugoRLopes/sass,MetaAshley/sass,Anshdesire/sass,zaru/sass,Ahnita/sass,Nzaga/sass,askl56/sass,zaru/sass,dylannnn/sass,danielfein/sass,OrenBochman/sass,antonifs/sass,Industrys/sass,srinivashappy/sass,srinivashappy/sass,cmpereirasi/sass,Industrys/sass,rammy7219/sass,chriseppstein/sass,lmetla/sass,schneems/sass,PMArtz92/sass,xzyfer/sass,nicklima/sass,stewx/sass,nickg33/sass,tangposmarvin/sass,modulexcite/sass,liquidmetal/sass,StephanieMak/sass,amitsuroliya/sass,DanteKaris/sass,askl56/sass,briangonzalez/sass,cmpereirasi/sass,amitsuroliya/sass,Galactix/sass,Iamronan/sass,hcatlin/sass,srawlins/sass,danielfein/sass,lmetla/sass,modulexcite/sass,schneems/sass,ridixcr/sass,JuanitoFatas/sass,Iamronan/sass,nicklima/sass,HugoRLopes/sass,stewx/sass,StephanieMak/sass,rammy7219/sass,MetaAshley/sass,Ahnita/sass,jaroot32/sass,nickg33/sass,jaroot32/sass,liquidmetal/sass,14113/sass,baiyanghese/sass,Anshdesire/sass,DanteKaris/sass,ridixcr/sass