Update README with icon guidelines as per #103
Update README with icon guidelines as per #103

smholloway/twofactorauth-1,hilliuse/twofactorauth,rj175/twofactorauth,MarenPeasley/twofactorauth,bceasydns/twofactorauth,denilsonsa/twofactorauth,mmahadevan-okta/twofactorauth,trogau/twofactorauth,sevhn/twofactorauth,marcryan/twofactorauth,userify/twofactorauth,robn/twofactorauth,cez81/twofactorauth,allynf/twofactorauth,kbuley/dongleauth,marcryan/twofactorauth,Criminalllz/twofactorauth,kojaxs/twofactorauth,briankelly/twofactorauth,Donatzsky/twofactorauth,01000101/twofactorauth,veratu/twofactorauth,youprofit/twofactorauth,darconeous/dongleauth,rabotica/twofactorauth,thr0wable/twofactorauth,OllieTerrance-forks/twofactorauth,hoovercj/perfectpass,zmarties/twofactorauth,Jawshy/twofactorauth,youprofit/twofactorauth,vaibhav430/twofactorauth,vgarmash/twofactorauth,smarkwell/twofactorauth,waako/twofactorauth,hilliuse/twofactorauth,briankelly/twofactorauth,ianklatzco/twofactorauth,tijmenb/twofactorauth,Jawshy/twofactorauth,denilsonsa/twofactorauth,hoovercj/perfectpass,waako/twofactorauth,stephengroat/twofactorauth,runasand/twofactorauth,runasand/twofactorauth,MethodGrab/twofactorauth,zmarties/twofactorauth,Jawshy/twofactorauth,stephengroat/twofactorauth,victorhaggqvist/twofactorauth,jtamplin/twofactorauth,kojaxs/twofactorauth,victorhaggqvist/twofactorauth,BenBE/twofactorauth,jdavis/twofactorauth,marcryan/twofactorauth,MethodGrab/twofactorauth,dy-dx/twofactorauth,maricn/twofactorauth,brierjon/twofactorauth,andrew-rolfe/twofactorauth,Criminalllz/twofactorauth,Jawshy/twofactorauth,maricn/twofactorauth,captn3m0/twofactorauth,veratu/twofactorauth,ilyakatz/twofactorauth,thr0wable/twofactorauth,userify/twofactorauth,gingerbeardman/twofactorauth,jtheriault/twofactorauth,RichJeanes/twofactorauth,sevhn/twofactorauth,seitsu/twofactorauth,ianklatzco/twofactorauth,mark-adams/twofactorauth,mslepko/twofactorauth,seitsu/twofactorauth,runasand/twofactorauth,bceasydns/twofactorauth,Canuteson/twofactorauth,Veruco/twofactorauth,OllieTerrance-forks/twofactorauth,smholloway/twofactorauth,ESWAT/twofactorauth,gboudreau/twofactorauth,rugk/twofactorauth,vanilla/twofactorauth,smarkwell/twofactorauth,sixshot/twofactorauth,smholloway/twofactorauth-1,mslepko/twofactorauth,cubiclesoft/twofactorauth,jdavis/twofactorauth,rabotica/twofactorauth,ilyakatz/twofactorauth,ESWAT/twofactorauth,cez81/twofactorauth,Veruco/twofactorauth,mcdanielisaac/twofactorauth,c960657/twofactorauth,amitmawkin/twofactorauth,ilyakatz/twofactorauth,bjorno/twofactorauth,ben-dearmond/twofactorauth,ahelpingchip/twofactorauth,Canuteson/twofactorauth,darconeous/dongleauth,trim108/trim108.github.io,plobbes/twofactorauth,brycied00d/dongleauth,denilsonsa/twofactorauth,rugk/twofactorauth,vgarmash/twofactorauth,jtamplin/twofactorauth,gfbarros/twofactorauth,01000101/twofactorauth,baileybasiscode/twofactorauth,gingerbeardman/twofactorauth,stannie/twofactorauth,bjorno/twofactorauth,rj175/twofactorauth,hilliuse/twofactorauth,allynf/twofactorauth,sevhn/twofactorauth,Nanotraktor/twofactorauth,brierjon/twofactorauth,Donatzsky/twofactorauth,Nanotraktor/twofactorauth,ioann1s/twofactorauth,gfbarros/twofactorauth,baileybasiscode/twofactorauth,vgarmash/twofactorauth,maricn/twofactorauth,amitmawkin/twofactorauth,benjholla/twofactorauth,smisk/twofactorauth,hasa/twofactorauth,sixshot/twofactorauth,rmeineke/twofactorauth,mcdanielisaac/twofactorauth,hoovercj/perfectpass,kojaxs/twofactorauth,fongandrew/twofactorauth,nicwaller/twofactorauth,Nanotraktor/twofactorauth,allynf/twofactorauth,NormandLemay/twofactorauth,Nitrokey/dongleauth,kbuley/dongleauth,trim108/trim108.github.io,mark-adams/twofactorauth,brycied00d/dongleauth,tijmenb/twofactorauth,trogau/twofactorauth,rugk/twofactorauth,NormandLemay/twofactorauth,danieltaylor/twofactorauth,trogau/twofactorauth,briankelly/twofactorauth,rmeineke/twofactorauth,ioann1s/twofactorauth,OllieTerrance-forks/twofactorauth,plobbes/twofactorauth,smholloway/twofactorauth,Nitrokey/dongleauth,ahelpingchip/twofactorauth,veratu/twofactorauth,stephengroat/twofactorauth,vanilla/twofactorauth,bjorno/twofactorauth,dy-dx/twofactorauth,ben-dearmond/twofactorauth,mark-adams/twofactorauth,BenBE/twofactorauth,ahelpingchip/twofactorauth,RichJeanes/twofactorauth,erikblake/twofactorauth,psugand/twofactorauth,NormandLemay/twofactorauth,rj175/twofactorauth,cez81/twofactorauth,captn3m0/twofactorauth,benjholla/twofactorauth,tresni/twofactorauth,captn3m0/twofactorauth,psugand/twofactorauth,smisk/twofactorauth,youprofit/twofactorauth,plobbes/twofactorauth,hasa/twofactorauth,RichJeanes/twofactorauth,edzieba/twofactorauth,gingerbeardman/twofactorauth,jtamplin/twofactorauth,benjholla/twofactorauth,robn/twofactorauth,Nitrokey/dongleauth,Canuteson/twofactorauth,gboudreau/twofactorauth,c960657/twofactorauth,brycied00d/dongleauth,stannie/twofactorauth,MarenPeasley/twofactorauth,amitmawkin/twofactorauth,erikblake/twofactorauth,cubiclesoft/twofactorauth,online-net/twofactorauth,Criminalllz/twofactorauth,danieltaylor/twofactorauth,ESWAT/twofactorauth,jtheriault/twofactorauth,baileybasiscode/twofactorauth,fongandrew/twofactorauth,StefanWallin/twofactorauth,kbuley/dongleauth,andrew-rolfe/twofactorauth,jdavis/twofactorauth,mmahadevan-okta/twofactorauth,edzieba/twofactorauth,MethodGrab/twofactorauth,BenBE/twofactorauth,nicwaller/twofactorauth,moizmv/twofactorauth,seitsu/twofactorauth,vaibhav430/twofactorauth,moizmv/twofactorauth,trim108/trim108.github.io,StefanWallin/twofactorauth,vaibhav430/twofactorauth,tresni/twofactorauth,smholloway/twofactorauth-1,rmeineke/twofactorauth,brierjon/twofactorauth,rabotica/twofactorauth,bceasydns/twofactorauth,online-net/twofactorauth