Add a link to the page describing our development
processes, as it contains the description of how
to identify issues and pull requests as stale.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Add a small section, clarifying the policies around modifying
contributions submitted by other developers.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>