Added support for `request(url, callback)`
Added support for `request(url, callback)`

fredigato/superagent,aaroncrows/superagent,alinz/superagent,sutoiku/superagent,modulexcite/superagent,visionmedia/superagent,wushuyi/superagent,sebastianvera/superagent,soyuka/superagent,visionmedia/superagent,philipshurpik/superagent,simonvizzini/superagent,KingMario/superagent,mvanlonden/superagent-webpack-client,eligolding/superagent,andyburke/superagent,nemisj/superagent,brainbytes/superagent,KuroGuo/suberagent,jarvisaoieong/superagent,geminiyellow/superagent,fredigato/superagent,wushuyi/superagent,classdojo/superagent,targos/superagent,RubenVerborgh/superagent,drinks/superagent,visionmedia/superagent,bevacqua/superagent,noikiy/suberagent,thejameskyle/superagent,ccapndave/superagent,classdojo/superagent,killerlayup/superagent,drinks/superagent,thejameskyle/superagent,yussan/superagent,alinz/superagent,focusaurus/superagent,modulexcite/superagent,soyuka/superagent,nemisj/superagent,mvanlonden/superagent-webpack-client,zsh2938/superagent,ertrzyiks/superagent,deltreey/superagent,kmalakoff/superagent-ls,h1bomb/superagent,craigspaeth/superagent,noikiy/suberagent,aaroncrows/superagent,sebastianvera/superagent,yeatszhang/superagent,brotchie/superagent,stanzi83/superagent,targos/superagent,ccapndave/superagent,killerlayup/superagent,stasha/superagent,kmalakoff/superagent-ls,philipshurpik/superagent,reinaldo13/superagent,andyburke/superagent,craigspaeth/superagent,eligolding/superagent,puterakahfi/superagent,h1bomb/superagent,stanzi83/superagent,geminiyellow/superagent,stasha/superagent,focusaurus/superagent,deltreey/superagent,yeatszhang/superagent,simonvizzini/superagent,brotchie/superagent,brainbytes/superagent,ertrzyiks/superagent,jarvisaoieong/superagent,RubenVerborgh/superagent,yussan/superagent,sutoiku/superagent,puterakahfi/superagent,reinaldo13/superagent,KuroGuo/suberagent,KingMario/superagent,zsh2938/superagent