Now that we only run pre-merge CI, it makes no sense to show a badge for
the coverage and pipeline status of the last run of master.

It would make sense to show a badge for the last pipeline which
was run for the last merge request that was merged to master, but
I don't see any feature to get that information.

  This patch also removes displaying the projects that live within
  the buildstream-examples repository, as we wish to deprecate this
  repo and migrate the two examples.
  - #438 and #439

  In addition to this, both examples do not 'build' in their current
  state.

 o Giving main pages simple word titles

   This makes the main page:

   * About
   * Installing
   * Using
   * Reference
   * Contributing

 o Now named all rst files with their parent page name as a prefix.

 o Also changed some titles to make overall consistent titles.

No empty lines after a section title, 2 empty lines before a section title.

This is rather innacurate, you can build software in any programming languange
given that you have provided the required resources for this in the runtime
you are using.