docs(README): add info about `npm install`
docs(README): add info about `npm install`

Closes #150

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ernandocanizo/angular-tutorial,kodelittle/angular-phonecat,kleorix/angular-phonecat,Ladonasc/angular-phonecat,mailmrmanoj/angular-phonecat,faner-father/angular-phnecat,yasin24/AngularProject,fguionne/first-repo,khhodges/angular-phonecat,dufabricio/angular-phonecat,rojoangel/angular-phonecat,o1ena/angular-phonecat,perterest/angular-phonecat,luisovando/angular-phonecat,tchasles/tchasles.github.io,ChaofengZhou/angular-phonecat,jorgep19/angularJS_tutorial,gabyquiles/angular1-tutorial,reuvensu/angular_phone,amfarrell/angular-phonecat,sanjeevbelagali/angular-phonecat,suryarend/angular-phonecat,daemonjaejin/angular,crosse712/angular-phonecat,BHASKARSDEN277GITHUB/angular-phonecat,goofiw/angular-phonecat,layne-shi/angular-phonecat,matiomlei/angular-phonecat,dev-yohan/angular-phonecat,maxwelldu/angular-phonecat,mumuzichen/angular-phonecat,wayne-lewis/angular-phonecat,Lexine/angular-phonecat,zyxzju/angular-phonecat,ErrorPro/Angular-test,Nopakorn/angular-phonecat,bojueWjt/angular-phonecat,zlienqwe/angular-phonecat,livhong/angular-phonecat,CoyPan/angular-phonecat,chilleren/ng-tutorial,dufabricio/angular-phonecat,LIHTU/star_ticker_app,CoyPan/angular-phonecat,balkrishnajha/angular-phonecat,binkz-2/angular-phonecat,ioarampatzis/angular-phonecat,mhogUCSD/angularjstutorial,sathish-j/firstRepo,liveangela/angular-phonecat,sephedoo/angular-phonecat,haixuanc/angular-phonecat,tsongas/angular-tutorial,techbow/angular,jamiegood/angseo,hanweifish/angular,d21anthony/angular-phonecat,ChrisVoxland/angular,gkalpak/angular-phonecat,ElaineYu/Angular-Phonecat-Tutorial,tofanelli/angular-phonecat,rulerpe/phonecat,thomaslam/angular-phonecat,ramnishkalsi/angular-phonecat,nbodonne/testangular,liveangela/angular-phonecat,fhergomez/angular-phonecat,reuvensu/angular_phone,chilleren/ng-tutorial,liangmicha/mithack,robbymaulanaMitrais/phonecat,weberl48/angular-phonecat,sjp20102020/angular-phonecat,doodeck/angular-phonecat,dsainst/angular,Nopakorn/angular-phonecat,hanweifish/angular,avandeursen/angular-phonecat-old,boostbob/angular-phonecat,Xymist/waverley-website-demo,ntphu/angular-phonecat,Bobjoy/angular-phonecat,shivrajbayar/phone_cat-protractor-,fguionne/first-repo,VitDevelop/angular-phonecat,githuya/angular-phonecat,sowahm/angular-phonecat,narayanaiyer/AngularJSTraining,gkalpak/angular-phonecat,bojueWjt/angular-phonecat,techbow/angular,vectorcode/angular,itsmeshiraz/geo-location-mapping,emodeen/healthcare-dashboard-angular,MrXcitement/angular-phonecat,suryarend/angular-phonecat,SuTran/angular-phonecat,Simratpreet/angular-phonecat,wayne-lewis/angular-phonecat,AndreasL67/angular-phonecat,WritingPanda/AngularJS_Tutorial,burasu/angular-phonecat,ASerputko/angular-phonecat,Aarturo/angular-phonecat,barrymay/angular-phonecat-ts-ng2-webpack,Paterpillar/angular-phonecat,jimtom2713/angular-phonecat,rahmangithub/phone-app-ng-official,bbailey1987/angular-phonecat,Delair/angular_phonecat,wayne-lewis/angular-phonecat,aldoshin/angular_phone,ntphu/angular-phonecat,mhogUCSD/cse112angularjs,moohing/angular-phonecat,dyx/angular-phonecat,kvncnnlly/pjTutorial,circleci/angular-phonecat,evgsman/angular-phonecat,caronchick/angularjs,avandeursen/angular-phonecat-old,Brancepeng/angular-phonecat,jakesmoon/Obsidian,shivabayar/phone-cat-lunch,iamsixer/angular-phonecat,Gordondalos/phonecat,rodcul/angular-phonecat,cesarmarinhorj/angular-phonecat,edivancamargo/angular-phonecat,andmarkan/angular-phonecat,antongusar/angular-checkout,sathish-j/firstRepo,chilleren/ng-tutorial,ErrorPro/Angular-test,kojo-caesar/phone-store,Bobjoy/angular-phonecat,SabrinaZ/Unit-Test-on-AngularJS-App,sephedoo/angular-phonecat,jorgep19/angularJS_tutorial,matiomlei/angular-phonecat,aar2014/AngularJSTutorial,robbymaulanaMitrais/phonecat,blackboyhc/angular-phonecat,VimVincent/angular-phonecat,BPeppard/angular-phonecat,vectorcode/angular,sahil87/angular-phonecat,timfesta/angular-phonecat,jdcasey/angular-learning,escapedcat/angular-phonecat-webpack-gulp,hi-ogawa/angularjs_test,free-memory/angular-phonecat,Xymist/waverley-website-demo,ElaineYu/Angular-Phonecat-Tutorial,Ramakrishna24/workspace,njleonzhang/angular-phonecat,jeromjoy/angular-phonecat,boostbob/angular-phonecat,o1ena/angular-phonecat,kurtnovack/angular-phonecat-upgrade,gef756/angular-phonecat,pborel/angular-phonecat,jimtom2713/angular-phonecat,Erane/angular-phonecat,gkalpak/angular-phonecat,dlee0113/angular-phonecat,liangmicha/mithack,kurtnovack/angular-phonecat-upgrade,Gordondalos/phonecat,BHASKARSDEN277GITHUB/angular-phonecat,ntphu/angular-phonecat,itsmeshiraz/geo-location-mapping,Matthew1994/angular-phonecat,jackfjo3/angular_tutorial,fernandocanizo/angular-tutorial,vitr/angular-phonecat,yingside/angular-phonecat,cloudcck/angular-phonecat-webpack-gulp,aar2014/AngularJSTutorial,Gwulior/angular-phonecat,nathanielltaylor/angular-phonecat,kvncnnlly/pjTutorial,sowahm/angular-phonecat,shivabayar/phone-cat-lunch,dennisleung/angular-phonecat,ioarampatzis/angular-phonecat,Lexine/angular-phonecat,jtryan/angular-demo,mvdmark/angular-phonecat,kleorix/angular-phonecat,cesarmarinhorj/angular-phonecat,livhong/angular-phonecat,kvncnnlly/pjTutorial,yingside/angular-phonecat,sjp20102020/angularapp2,sajin/phoneApp,vitr/angular-phonecat,guangshan1992/angular-phonecat,KaijuKevin/angular-phonecat,blankymaree/angularjs-training,TrienDo/angular-phonecat,jmcabandara/angular-phonecat,lgeorgif/tutorial,VitDevelop/angular-phonecat,sudeshdws/angular-phonecat,Delair/angular_phonecat,sahil87/angular-phonecat,jrutishauser/angular-phone,XvarX/angular-phonecat,jtryan/angular-demo,cesarmarinhorj/angular-phonecat,Ladonasc/angular-phonecat,jrutishauser/angular-phone,kevinfguo/angular-phonecat,YOODOJO/test,tofanelli/angular-phonecat,denisKaranja/AngularJS-12,RyanChristian259/angular-phonecat,Nopakorn/angular-phonecat,XiaolinSong5/contact-form,jdcasey/angular-learning,prasadjacks/angularjs_demo,gustavo725/angular-phonecat,rulerpe/phonecat,ymote/angular-phonecat-1,sjp20102020/angular-phonecat,angular/angular-phonecat,kenwilcox/angular-phonecat,timfesta/angular-phonecat,savs/nodeangular,pborel/angular-phonecat,cloudcck/angular-phonecat-webpack-gulp,caseyrieder/phonecat,StephanMusgrave/angular-phonecat,Aarturo/angular-phonecat,timfesta/angular-phonecat,irwinlove/angular-phonecat,dcorelibran/angular-phonecat,haixuanc/angular-phonecat,guandai/angular-phonecat,jackfjo3/angular_tutorial,dbxdnl/angular-phonecat,pjagga/Angular-phonecat,lelehehe/phonecat-upgrade,JThoennes/click-buzz,jianfulee/angular-phonecat,kojo-caesar/phone-store,zs9912/angular-phonecat,mhogUCSD/cse112angularjs,yoda-yoda/AngularJS-12,greentech77/angular-phonecat,mvdmark/angular-phonecat,Kerem193/NodeJsMongo,gabyquiles/angular1-tutorial,TrienDo/angular-phonecat,dirakkk/reecycle,vitr/angular-phonecat,ganeshghag/angular-phonecat,dyx/angular-phonecat,MrXcitement/angular-phonecat,iamsixer/angular-phonecat,mssjtxwd/angular-phonecat,dsainst/angular,smoralesd/angular-phonecat,rhlass/angular-phonecat,asagajda/gantt,Kerem193/NodeJsMongo,RyanChristian259/angular-phonecat,XiaolinSong5/contact-form,sowahm/angular-phonecat,avandeursen/angular-phonecat,sprdave/angular-phonecat,nyTsai/angular-phonecat-1,YOODOJO/test,dbxdnl/angular-phonecat,sudeshdws/angular-phonecat,pjagga/Angular-phonecat,weberl48/angular-phonecat,Bobby71/angular-phonecat,nianjie/angulartutorial,caseyrieder/phonecat,SabrinaZ/Unit-Test-on-AngularJS-App,blackboyhc/angular-phonecat,aigouzz/new-to-angular,garciadanny/angular-phonecat-tutorial,jimtom2713/angular-phonecat,aigouzz/new-to-angular,andmarkan/angular-phonecat,zs9912/angular-phonecat,sjp20102020/angularApp,Gwulior/angular-phonecat,elmeryang/cse112angular,fhergomez/angular-phonecat,evgsman/angular-phonecat,Neras/angular-phonecat,ChaofengZhou/angular-phonecat,SentientBits/angular-phonecat,haixuanc/angular-phonecat,shivrajbayar/phone_cat-protractor-,Ramakrishna24/workspace,sajin/phoneApp,Linzai1994/angular-phonecat,jmcabandara/angular-phonecat,rojoangel/angular-phonecat,rahmangithub/phone-app-ng-official,OpticusRadicus/cookie-zombie,sjp20102020/angular-phonecat,Neras/angular-phonecat,leijin/angular,aprikhodko/angular-phonecat,ZenTechnologyLab/Projects-PhoneCaApp,Linzai1994/angular-phonecat,blankymaree/angularjs-training,SentientBits/angular-phonecat,githuya/angular-phonecat,mssjtxwd/angular-phonecat,NancyOberoi/angular-phonecate,rulerpe/phonecat,binkz-2/angular-phonecat,yoda-yoda/AngularJS-12,Xymist/waverley-website-demo,sjp20102020/angularApp,NChandrasekar/angular-phonecat