README: Download instructions updated
README: Download instructions updated

They were still for hg, updated to git

jerli/sympy,yashsharan/sympy,shipci/sympy,VaibhavAgarwalVA/sympy,kaichogami/sympy,yukoba/sympy,Titan-C/sympy,souravsingh/sympy,garvitr/sympy,MechCoder/sympy,hrashk/sympy,AkademieOlympia/sympy,atreyv/sympy,ChristinaZografou/sympy,Arafatk/sympy,ChristinaZografou/sympy,Arafatk/sympy,wyom/sympy,toolforger/sympy,kmacinnis/sympy,kevalds51/sympy,Curious72/sympy,jbaayen/sympy,Vishluck/sympy,pandeyadarsh/sympy,hazelnusse/sympy-old,Davidjohnwilson/sympy,jbbskinny/sympy,flacjacket/sympy,garvitr/sympy,kmacinnis/sympy,cccfran/sympy,emon10005/sympy,minrk/sympy,pandeyadarsh/sympy,maniteja123/sympy,sahmed95/sympy,lidavidm/sympy,cswiercz/sympy,mattpap/sympy-polys,toolforger/sympy,drufat/sympy,cswiercz/sympy,beni55/sympy,liangjiaxing/sympy,atsao72/sympy,wanglongqi/sympy,debugger22/sympy,kaushik94/sympy,drufat/sympy,Shaswat27/sympy,grevutiu-gabriel/sympy,Davidjohnwilson/sympy,postvakje/sympy,maniteja123/sympy,atreyv/sympy,AunShiLord/sympy,kaushik94/sympy,bukzor/sympy,jaimahajan1997/sympy,abhiii5459/sympy,madan96/sympy,Curious72/sympy,emon10005/sympy,grevutiu-gabriel/sympy,Designist/sympy,abloomston/sympy,pbrady/sympy,moble/sympy,rahuldan/sympy,skidzo/sympy,pernici/sympy,jbbskinny/sympy,cccfran/sympy,Sumith1896/sympy,KevinGoodsell/sympy,rahuldan/sympy,jamesblunt/sympy,chaffra/sympy,moble/sympy,toolforger/sympy,Davidjohnwilson/sympy,jaimahajan1997/sympy,chaffra/sympy,lindsayad/sympy,VaibhavAgarwalVA/sympy,meghana1995/sympy,hrashk/sympy,sahilshekhawat/sympy,Vishluck/sympy,lindsayad/sympy,pbrady/sympy,mafiya69/sympy,tovrstra/sympy,lidavidm/sympy,yukoba/sympy,jaimahajan1997/sympy,Titan-C/sympy,fperez/sympy,beni55/sympy,postvakje/sympy,Sumith1896/sympy,skidzo/sympy,hrashk/sympy,Designist/sympy,shipci/sympy,meghana1995/sympy,ChristinaZografou/sympy,sahmed95/sympy,diofant/diofant,srjoglekar246/sympy,wyom/sympy,aktech/sympy,Vishluck/sympy,MridulS/sympy,MridulS/sympy,oliverlee/sympy,wanglongqi/sympy,oliverlee/sympy,shikil/sympy,debugger22/sympy,drufat/sympy,dqnykamp/sympy,garvitr/sympy,abhiii5459/sympy,Curious72/sympy,shikil/sympy,saurabhjn76/sympy,vipulroxx/sympy,debugger22/sympy,hargup/sympy,jerli/sympy,dqnykamp/sympy,liangjiaxing/sympy,madan96/sympy,shikil/sympy,asm666/sympy,madan96/sympy,emon10005/sympy,hargup/sympy,MechCoder/sympy,VaibhavAgarwalVA/sympy,souravsingh/sympy,grevutiu-gabriel/sympy,ga7g08/sympy,farhaanbukhsh/sympy,hazelnusse/sympy-old,dqnykamp/sympy,asm666/sympy,lindsayad/sympy,yashsharan/sympy,liangjiaxing/sympy,ga7g08/sympy,meghana1995/sympy,mcdaniel67/sympy,lidavidm/sympy,shipci/sympy,Shaswat27/sympy,kaichogami/sympy,saurabhjn76/sympy,pbrady/sympy,yukoba/sympy,aktech/sympy,sahmed95/sympy,chaffra/sympy,mafiya69/sympy,abloomston/sympy,kumarkrishna/sympy,kaushik94/sympy,wanglongqi/sympy,asm666/sympy,bukzor/sympy,aktech/sympy,jerli/sympy,ryanGT/sympy,farhaanbukhsh/sympy,AkademieOlympia/sympy,Sumith1896/sympy,jamesblunt/sympy,sampadsaha5/sympy,minrk/sympy,cccfran/sympy,MridulS/sympy,iamutkarshtiwari/sympy,wyom/sympy,oliverlee/sympy,kumarkrishna/sympy,moble/sympy,amitjamadagni/sympy,beni55/sympy,sunny94/temp,AunShiLord/sympy,iamutkarshtiwari/sympy,sampadsaha5/sympy,sahilshekhawat/sympy,Gadal/sympy,yashsharan/sympy,iamutkarshtiwari/sympy,ga7g08/sympy,atreyv/sympy,Titan-C/sympy,sunny94/temp,Arafatk/sympy,mcdaniel67/sympy,abhiii5459/sympy,MechCoder/sympy,atsao72/sympy,Mitchkoens/sympy,skidzo/sympy,jbbskinny/sympy,Designist/sympy,amitjamadagni/sympy,mcdaniel67/sympy,Gadal/sympy,AunShiLord/sympy,pandeyadarsh/sympy,Mitchkoens/sympy,bukzor/sympy,maniteja123/sympy,sahilshekhawat/sympy,ahhda/sympy,mafiya69/sympy,kevalds51/sympy,abloomston/sympy,rahuldan/sympy,ahhda/sympy,cswiercz/sympy,sampadsaha5/sympy,Shaswat27/sympy,ahhda/sympy,atsao72/sympy,kmacinnis/sympy,AkademieOlympia/sympy,vipulroxx/sympy,hargup/sympy,skirpichev/omg,jamesblunt/sympy,kaichogami/sympy,Mitchkoens/sympy,saurabhjn76/sympy,vipulroxx/sympy,farhaanbukhsh/sympy,souravsingh/sympy,kevalds51/sympy,postvakje/sympy,Gadal/sympy,kumarkrishna/sympy,sunny94/temp