Added remark about Python versions to installation docs
Added remark about Python versions to installation docs

tjwei/jedi,jonashaag/jedi,WoLpH/jedi,flurischt/jedi,tjwei/jedi,WoLpH/jedi,mfussenegger/jedi,dwillmer/jedi,jonashaag/jedi,dwillmer/jedi,mfussenegger/jedi,flurischt/jedi