zap: Add perf doc :zap:
zap: Add perf doc :zap:

fixes #313 (Closes #357)

WestchesterPublicLibrary/WPLreports,SB-Technology-Holdings-International/Water,gertcuykens/polymer-starter-kit,fousheezy/ncdc-events,proplanr/polymer-starter-kit,timeu/polymer-starter-kit,bdnorg/tmi,alexpaluzzi/polymer-starter-kit,stefanoantonel/ecofit,Ex-ante-Labs/pivot-ahead,semafloor/semafloor-test-alpha,camargoanderso/polymer-starter-kit,grebett/polymer-starter-kit,natabbotts/blogs.org.uk,gertcuykens/polymer-starter-kit,WestchesterPublicLibrary/WPLreports,didrocks/site-julie,anthonybrown/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,proplanr/polymer-starter-kit,klarkc/polymer-loopback-starter-kit,egohub/appdesign,sebs/cat-toy,SB-Technology-Holdings-International/Water,timeu/polymer-starter-kit,m4h4n/polymer-starter-kit,anusornc/polymer-starter-kit,ragingwind/polymer-starter-kit,camargoanderso/polymer-starter-kit,Serious-Rage/poligomy,Ex-ante-Labs/shopper.ninja,gick/reveries-project,victorgb6/id-questionary,mtusk/polymer-starter-kit,jeffposnick/polymer-starter-kit,robdodson/polymer-starter-kit,didrocks/site-julie,natabbotts/blogs.org.uk,soonick/polymer-starter-kit,stephenzsy/charon-frontend,plusCubed/pluscubed-site,datalink747/polymer-starter-kit,Sykkro/penny-web,RoyKoh/Project-3,SB-Technology-Holdings-International/WateringWebClient,Sykkro/penny-web,gick/mobile-polymer-starter-2,didrocks/site-julie,StartPolymer/polymer-starter-kit,FaellCarvalho/Geo-Location,yi-jiayu/mahjong-calculator-v2,ragingwind/polymer-starter-kit,1001genomes/admixture-map,stefanoantonel/brainpower,gick/reveries-project,hbx5555/polymer-starter-kit,RoyKoh/Project-3,plusCubed/pluscubed-site,SB-Technology-Holdings-International/WateringWebClient,klarkc/polymer-loopback-starter-kit,jeffposnick/polymer-starter-kit,lordoftheflies/mlm-portal,jdavidagudelo/polymerstarter,m4h4n/polymer-starter-kit,gick/mobile-polymer-starter-2,andrefuller/PolymerTrailerViewer,jamesthechamp/polymer-starter-kit,grebett/polymer-starter-kit,bdnorg/tmi,abdonrd/polymer-starter-kit,trendystore/store,GNURub/polymer-starter-kit,TheFinestArtist/HandbellChoir-Web,felixzapata/polymer-starter-kit,lordoftheflies/mlm-portal,jamesthechamp/polymer-starter-kit,asternux/polymer-starter-kit,WestchesterPublicLibrary/WPLreports,VandeurenGlenn/web-import,alexpaluzzi/polymer-starter-kit,stefanoantonel/ecofit,StartPolymer/polymer-starter-kit-plus,lordoftheflies/mlm-portal,gertcuykens/polymer-starter-kit,SB-Technology-Holdings-International/Water,didrocks/polymer-starter-kit,ragingwind/polymer-starter-kit,SB-Technology-Holdings-International/Water,LM450N/polymer-starter-kit,TheFinestArtist/HandbellChoir-Web,jakemac53/polymer-starter-kit,klarkc/polymer-loopback-starter-kit,Negashev/negash.ru,flaiker/polymer-starter-kit,robdodson/polymer-starter-kit,markovuksanovic/polymer-starter-kit,hbx5555/polymer-starter-kit,trendystore/store,yi-jiayu/mahjong-calculator-v2,tecla5/site,taranjeetsapra/polymer-starter-kit,Negashev/negash.ru,trendystore/store,JnJSW/dttdata,SB-Technology-Holdings-International/WateringWebClient,hourliert/polymer-starter-kit,gick/mobile-polymer-starter-2,michaetto/f16,gick/reveries-project,grebett/polymer-starter-kit,abdonrd/polymer-starter-kit,VandeurenGlenn/web-import,felixzapata/polymer-starter-kit,Sykkro/penny-web,hourliert/polymer-starter-kit,stefanoantonel/ecofit,vl4dt/polymer-starter-kit,Ex-ante-Labs/shopper.ninja,jdavidagudelo/polymerstarter,gianluka79/First,anthonybrown/polymer-starter-kit,StartPolymer/polymer-starter-kit,anusornc/polymer-starter-kit,bird1235456/polymer-starter-kit,kristianmandrup/polymer-starter-kit-plus,Serious-Rage/poligomy,victorgb6/id-questionary,elenadatsiuk/tinkersolomid,flaiker/polymer-starter-kit,didrocks/polymer-starter-kit,LM450N/polymer-starter-kit,patilharshali/polymer-starter-kit,JnJSW/dttdata,Jelle-imitto/tools-polymer,kristianmandrup/polymer-starter-kit,RoyKoh/Project-3,Jelle-imitto/tools-polymer,GNURub/polymer-starter-kit,michaetto/f16,ianholing/geowall-project,mtusk/polymer-starter-kit,stephenzsy/charon-frontend,proplanr/polymer-starter-kit,kristianmandrup/polymer-starter-kit,vl4dt/polymer-starter-kit,bird1235456/polymer-starter-kit,JnJSW/dttdata,markovuksanovic/polymer-starter-kit,andrefuller/PolymerTrailerViewer,datalink747/polymer-starter-kit,michaetto/f16,Jelle-imitto/tools-polymer,felixzapata/polymer-starter-kit,fousheezy/ncdc-events,stephenzsy/charon-frontend,tecla5/site,1001genomes/admixture-map,dennisg/luminis-colleagues,markovuksanovic/polymer-starter-kit,semafloor/semafloor-test-alpha,Ex-ante-Labs/pivot-ahead,kristianmandrup/polymer-starter-kit-plus,gianluka79/First,sebs/cat-toy,ianholing/geowall-project,SB-Technology-Holdings-International/Water,Serious-Rage/poligomy,gianluka79/First,taranjeetsapra/polymer-starter-kit,semafloor/semafloor-test-alpha,elenadatsiuk/tinkersolomid,patilharshali/polymer-starter-kit,didrocks/site-julie,WestchesterPublicLibrary/WPLreports,egohub/appdesign,stefanoantonel/brainpower,asternux/polymer-starter-kit,soonick/polymer-starter-kit,FaellCarvalho/Geo-Location,StartPolymer/polymer-starter-kit-plus,victorgb6/id-questionary,Jelle-imitto/tools-polymer,FaellCarvalho/Geo-Location,SB-Technology-Holdings-International/WateringWebClient,Jelle-imitto/tools-polymer,Negashev/negash.ru,jakemac53/polymer-starter-kit,andrefuller/PolymerTrailerViewer,dennisg/luminis-colleagues,LM450N/polymer-starter-kit