Create hashing.md (#1762)
Create hashing.md (#1762)

* Create hashing.md

I wrote this up to answer some questions about hashing I've been seeing in #help.  It would be nice to add a !hash macro that could reference this as well.

* Update hashing.md

rpotpogo/PokemonGo-Map,djfye/PokemonGo-Map,ultrafunkamsterdam/PokemonGo-Map,voxx/RocketMap,KoertJanssens/MasterBall.be,Obihoernchen/RocketMap,djfye/RocketMap,RocketMap/RocketMap,AEtHeLsYn/RocketMap,slgphantom/RocketMap,djfye/PokemonGo-Map,pkgta1/shuffle,neskk/RocketMap,neskk/PokemonGo-Map,ultrafunkamsterdam/PokemonGo-Map-V2,mpw1337/RocketMap,sebastienvercammen/RocketMap,houkop/PokemonGo-Map,SilphServices/RocketMap,voxx/RocketMap,SilphServices/RocketMap,HowDoesExcelWork/RocketMap,voxx/RocketMap,tomballgithub/RocketMap,hubertokf/RocketMap,averylarry/RocketMap,catnet23/PokemonGo-Map,sebastienvercammen/RocketMap,ultrafunkamsterdam/PokemonGo-Map-V2,slgphantom/RocketMap,sclo012/PokemonGo-Map,catnet23/PocketMap,neskk/PokemonGo-Map,djfye/PokemonGo-Map,birdstream/RocketMap,sebastienvercammen/RocketMap,pkgta1/shuffle,SilphServices/RocketMap,DennyLoko/RocketMap,DennyLoko/RocketMap,AEtHeLsYn/RocketMap,tomballgithub/RocketMap,averylarry/RocketMap,rpotpogo/PokemonGo-Map,ultrafunkamsterdam/PokemonGo-Map-V2,rpotpogo/PokemonGo-Map,dev042/RocketMap,pkgta1/shuffle,ultrafunkamsterdam/PokemonGo-Map,dev042/RocketMap,averylarry/RocketMap,djfye/RocketMap,KoertJanssens/MasterBall.be,Obihoernchen/RocketMap,mpw1337/RocketMap,ultrafunkamsterdam/PokemonGo-Map,houkop/PokemonGo-Map,voxx/RocketMap,SilphServices/RocketMap,pgandev/RocketMap,dev042/RocketMap,sclo012/PokemonGo-Map,RocketMap/RocketMap,hubertokf/RocketMap,djfye/RocketMap,slgphantom/RocketMap,neskk/RocketMap,hubertokf/RocketMap,sclo012/PokemonGo-Map,mpw1337/RocketMap,rpotpogo/PokemonGo-Map,tomballgithub/RocketMap,dev042/RocketMap,birdstream/RocketMap,averylarry/RocketMap,houkop/PokemonGo-Map,neskk/PokemonGo-Map,tomballgithub/RocketMap,Alderon86/RocketMap,catnet23/PocketMap,Obihoernchen/RocketMap,neskk/PokemonGo-Map,catnet23/PokemonGo-Map,boby361/RocketMap,catnet23/PokemonGo-Map,AEtHeLsYn/RocketMap,Obihoernchen/RocketMap,KoertJanssens/MasterBall.be,neskk/RocketMap,pkgta1/shuffle,pgandev/RocketMap,AEtHeLsYn/RocketMap,boby361/RocketMap,JapuDCret/RocketMap-Do,pgandev/RocketMap,HowDoesExcelWork/RocketMap,boby361/RocketMap,JapuDCret/RocketMap-Do,Alderon86/RocketMap,DennyLoko/RocketMap,Alderon86/RocketMap,ultrafunkamsterdam/PokemonGo-Map,djfye/PokemonGo-Map,djfye/RocketMap,JapuDCret/RocketMap-Do,birdstream/RocketMap,KoertJanssens/MasterBall.be,RocketMap/RocketMap,neskk/RocketMap,ultrafunkamsterdam/PokemonGo-Map-V2,HowDoesExcelWork/RocketMap,mpw1337/RocketMap,hubertokf/RocketMap,sebastienvercammen/RocketMap,slgphantom/RocketMap,HowDoesExcelWork/RocketMap,boby361/RocketMap,Alderon86/RocketMap,birdstream/RocketMap,DennyLoko/RocketMap,houkop/PokemonGo-Map,catnet23/PocketMap,sclo012/PokemonGo-Map,RocketMap/RocketMap,pgandev/RocketMap,JapuDCret/RocketMap-Do,catnet23/PokemonGo-Map,catnet23/PocketMap