message: Update README.md
  add openSUSE installation instructions using zypper
diff: @@ -62,7 +62,9 @@ Building PCM Tools
  Downloading Pre-Compiled PCM Tools
  --------------------------------------------------------------------------------
  -- Linux: precompiled RPMs (binary and source) and DEBs are available [here](https://download.opensuse.org/repositories/home:/opcm/)
  +- Linux:
  + * openSUSE: `sudo zypper install pcm`
  + * RPMs and DEBs with the *latest* PCM version for RHEL/SLE/Ubuntu/Debian/openSUSE/etc distributions (binary and source) are available [here](https://download.opensuse.org/repositories/home:/opcm/)
  - Windows: download PCM binaries as [appveyor build service](https://ci.appveyor.com/project/opcm/pcm/history) artifacts and required Visual C++ Redistributable from [www.microsoft.com](https://www.microsoft.com/en-us/download/details.aspx?id=48145). Additional drivers are needed, see [WINDOWS_HOWTO.md](https://github.com/opcm/pcm/blob/master/WINDOWS_HOWTO.md).
  - Docker: see [instructions on how to use pcm-sensor-server pre-compiled container from docker hub](https://github.com/opcm/pcm/blob/master/DOCKER_README.md).
  