Fedora server install instructions that might actuall work - fixes 521

Fixes #521.

Motivated by #510 and #531.
We keep instructing users to use `yum localinstall`,  but the man page says:

```
       localinstall
              Is used to install a set of local rpm files. If required the enabled
              repositories will be used to resolve  dependencies.  Note  that  the
              install  command  will do a local install, if given a filename. This
              command is maintained for legacy reasons only.
```