update readme for preboot
update readme for preboot

tux2323/angular2-webpack,jojanper/angular-app,aitor-garcia-p/webgira-showcase,jojanper/angular-app,preboot/angular-webpack,stardom84/clinics,Foxandxss/angular2-webpack,tux2323/angular2-webpack,onelazyugy/angular2-webpack,Znow/ZnowBlog,gravity-addiction/angular2-webpack-login,tux2323/angular2-webpack,kattsushi/electron-angular2-seed,internetjesus/ng2-dd,preboot/angular2-webpack,Foxandxss/angular2-webpack,aitor-garcia-p/webgira-showcase,flosky/fashioncloud-angular2-hackathon,aismwise/hackers-toolkit,Znow/ZnowBlog,rborgwald/recipe-ui,CovalentLabs/project-w-app,aismwise/hackers-toolkit,jgiunti/angular2-webpack-bootsrapv4-starter,Selleo/angular2-workshop,carluccyo/reese-admin,stardom84/clinics,rborgwald/recipe-ui,internetjesus/ng2-dd,gravity-addiction/angular2-webpack-login,jgiunti/angular2-webpack-bootsrapv4-starter,lodybo/testing-in-angular,carluccyo/reese-admin,Selleo/angular2-workshop,prohorova/angular2-map-component,leviathan88/furkan,lodybo/testing-in-angular,flosky/fashioncloud-angular2-hackathon,lodybo/testing-in-angular,gravity-addiction/angular2-webpack-login,rborgwald/recipe-ui,kattsushi/electron-angular2-seed,Znow/ZnowBlog,preboot/angular2-webpack,headfwd/mrbox-front-end,rborgwald/recipe-ui,preboot/angular2-webpack,Zinadore/capstoneed-common,stardom84/clinics,headfwd/mrbox-front-end,Cammisuli/angular2-animation-test,Selleo/angular2-workshop,aitor-garcia-p/webgira-showcase,internetjesus/ng2-dd,carluccyo/reese-admin,CovalentLabs/project-w-app,CovalentLabs/project-w-app,leviathan88/furkan,leviathan88/furkan,jojanper/angular-app,jgiunti/angular2-webpack-bootsrapv4-starter,preboot/angular-webpack,Zinadore/capstoneed-common,prohorova/angular2-map-component,prohorova/angular2-map-component,kattsushi/electron-angular2-seed,Cammisuli/angular2-animation-test,flosky/fashioncloud-angular2-hackathon,Foxandxss/angular2-webpack,Cammisuli/angular2-animation-test,onelazyugy/angular2-webpack,Zinadore/capstoneed-common,headfwd/mrbox-front-end,onelazyugy/angular2-webpack,prohorova/angular2-map-component,preboot/angular-webpack,aismwise/hackers-toolkit