tweak implementation of #1376
tweak implementation of #1376

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Pi314/reveal.js,gisinc/gisi-revealjs,icane/cursoR,jyrkiput/jyrkiput.github.io,brettsnaidero/svg-animation-slides,girldevelopitcincinnati/reveal.js,martip-sainsburys/nodejs-talk,ctrladel/stl2016,dbs/reveal.js,VisualComputing/Transformations,joshq00/ironyard-tdd,fortranguy/Defense,imotov/presentations,pprzetacznik/IElixir-presentation,icane/cursoR,jmcuestasb/Transformations,orient-man/reveal.js,Club-Elec/2017-cours-git,morvans/headless-drupal-2017,glours/vavr-presentation,nekop/slides,agisga/reveal.js,kroysemaj/tamagotchi-tdd-talk,lucemia/slides,michaelstingl/occon17-desktop-client,sshaar08/revealSMS,laras126/talks,mattkauffman/open-source-roadmap,ChrisChinchilla/Presentations,hjunaid/java-beginners-course-slides,howbazaar/slides,BainbridgeArtisanResourceNetwork/class-notes-revealed,dherges/talks-and-slides,S73417H/bookitin-presentation,kamkor/asynchronous-programming-with-scala-futures,big-talk/big-talk.github.io,jonathanhaslett/slides,milenaarmada/GDGPresentation,shiya/reveal.js,TDRTalks/emerging-technologies,rynr/slides,nmallott/presDevoxx,davidjb/2016-devnq-open-source-talk,slashrsm/entity-embed-session,joelmheim/git-intro,arnaudcoj/pji_presentation_full_metal_planete,briehman/git-presentation,nicobytes/slides-ionic-push,Happy-Ferret/FirefoxPres,mcanlas/typeclasses,aah/perils,burnpanck/reveal.js,arm22/MBT,phoebe108/walkshed-slides,cwaldbieser/reveal.js,stssoftware/functional-programming-in-js-presentation,GuillaumeDerval/MasterThesis-Presentation,BainbridgeArtisanResourceNetwork/class-notes-revealed,mattkauffman/open-source-roadmap,fghaas/reveal.js,feroda/revealjs-hacking-stem-for-IoE,bitjson/bitauth-slides,paraplexed/openwest-2016-revealjs,beckysroufe/ladies-that-ux-phx-intro,joeskeen/ng-steam-presentation,matt-tingen/this-presentation,forkata/http2,pascalgrimaud/reveal.js,kbiger/DevfestTalk2016GraphDB,anghelvalentin/prezentare,gapple/myplanet-revealjs,danpersa/rest,burnpanck/reveal.js,bunopus/presentation-dart-alive-v2,autarch/reveal.js,arelia/flex-talk,Jean85/reveal.js,easel/scala-intro,FablabLannion/Com,nicobytes/course-ionic2,laras126/talks,spacepants/reveal.js,Castone22/2017-something-watir,benmvp/slides,wanderview/slides-pwa-summit-2016,raerpo/typescript-talk,spacepants/reveal.js,fafnirical/beginner-javascript-training,TDRTalks/emerging-technologies,l0wely/reveal.js,filipeximenes/talk_testing_web_apis,nmallott/presDevoxx,yougov/mongoworld-2016,ben-denham/drupal-environment-management,cecyc/cli-for-beginners,cardil/osd2016-opensource,brockers/reveal.js,latazzajones/tashas_presentations,agross/git-reveal,kenkunz/js-crash-course,claudiopro/reveal.js,mislavcimpersak/lightning-talk-awesome-dev-fun,komita1981/reveal.js,micgo/Visualizing-Your-Journey-With-Chef,akitaonrails/revealjs-feevale-2017,kamkor/asynchronous-programming-with-scala-futures,uggla/reveal.js,ilanp13/reveal.js,ChrisChinchilla/Presentations,jlengstorf/reveal.js-jade,kmees/ReactNext2016-Slides,milenaarmada/GDGPresentation,ibuziuk/reveal.js,snowyu/reveal.js,jayramj/agile-retro,mrdhiraj/IOCPresentation,orange-devrap/devdays-ng2,LemuelCushing/january-uprising-seminar,skinny85/kotlin-brownbag,gerard-pmh/revealjs-conserto,ell3n/architecture-slides,lnicks/p,lnicks/p,meonkeys/seagl2017-rpi-talk,sarahsga/ionic-ngpk,garajo/reveal.js-ncjs,truist/reveal.js,michaelstingl/owncloudconf-logs,michaelstingl/occon17-desktop-client,bonitasoft/training-presentation-tool,rynr/slides,kmees/ReactNext2016-Slides,slashrsm/entity-embed-session,jlengstorf/reveal.js-jade,unnamedcrewman/reveal.js,tgautier/slides,akitaonrails/revealjs-feevale-2017,slashrsm/ask_not_session,froztbyte/devopsdays-cpt-2016,lwoodrick/accessibility-talk,esatterwhite/skyring-lightningtalk-01-17,imotov/presentations,nicolasmccurdy/testing-talk,filipeximenes/talk_testing_web_apis,gapple/myplanet-revealjs,soulcharmer/pubquiz_template,darcamo/python-and-numpy-course,jlevallois/Kreveal.js,dokterbob/dsrp-introduction,seutje/saxomochrome,sparkoo/java9-presentation,xavierdeneux/cours-webanalytics,bonitasoft/training-presentation-tool,czechitas/tvorim-web-1,denehyg/reveal.js,unasuke/reveal.js,cardil/osd2016-opensource,tehfedaykin/StayInspired,Conjuror/reveal.js,robyvandamme/reveal.js,alexelash/elaconf2017,nuxman/fip-devops,marcusdb/funwithfunctional,nekop/slides,benmvp/slides,ochaloup/reveal.js,lecovi/reveal.js,adriaanm/reveal.js,kbiger/devfest_asynchapi,maximesinclair/presentations,CQRSESCQFD/slides,JuanCaicedo/oboejs-talk,moda-schneij/thick_client_slide_deck,kenkunz/js-crash-course,saschwarz/angular2-gestures-slides,dev9com/dev9reveal.js,pushp/python101,mrjoshida/maker_workshop,CMeza99/presentation--ci-cd-101,glours/vavr-presentation,chris-hamper/getting-your-content-json-api