Fixed INSTALL file for Mercurial.
Fixed INSTALL file for Mercurial.

emergebtc/evennia,ypwalter/evennia,titeuf87/evennia,ergodicbreak/evennia,titeuf87/evennia,feend78/evennia,mrkulk/text-world,feend78/evennia,TheTypoMaster/evennia,TheTypoMaster/evennia,feend78/evennia,mrkulk/text-world,titeuf87/evennia,titeuf87/evennia,mrkulk/text-world,TheTypoMaster/evennia,shollen/evennia,ergodicbreak/evennia,ergodicbreak/evennia,emergebtc/evennia,jamesbeebop/evennia,emergebtc/evennia,ypwalter/evennia,ypwalter/evennia,feend78/evennia,jamesbeebop/evennia,shollen/evennia,mrkulk/text-world,jamesbeebop/evennia