Update to indicate that yum is only on redhat linux derivations
Update to indicate that yum is only on redhat linux derivations

gearpump/gearpump.github.io,stanleyxu2005/gearpump.github.io,gearpump/gearpump.github.io,gearpump/gearpump.github.io,stanleyxu2005/gearpump.github.io,stanleyxu2005/gearpump.github.io