added license to package.json
added license to package.json

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