http://r13---sn-o097znez.googlevideo.com/videoplayback?id=o-ADfWfaTXJ2hGFfnHM_5PX74O2d0IrRV2z11CiCc0u9Ak&signature=69740F8EA89B9B8B9FA559482C6B9181FC78DC20.06AB17AD6B59000CB960AD937D3706B575DA8608&key=cms1&ipbits=0&fexp=900225%2C900720%2C907263%2C916654%2C916930%2C934954%2C9405708%2C9406127%2C9407103%2C9408096%2C9408101%2C948124%2C948703%2C951511%2C951703%2C952612%2C953000%2C957201%2C961404%2C961406&ratebypass=yes&pl=24&ip=64.71.151.8&upn=KKL0PQtRBEM&expire=1427461170&sparams=dur,expire,id,ip,ipbits,itag,mm,ms,mv,pl,ratebypass,source,upn&itag=22&source=youtube&sver=3&dur=4682.350&title=An+Angular2+Todo+App-+First+look+at+App+Development+in+Angular2&redirect_counter=1&req_id=9e6e9113bfba3ee&cms_redirect=yes&mm=30&ms=nxu&mt=1427439519&mv=m