Rose documentation: minor improvements to the introduction
config-edit: fix section ignore
Merge pull request #325 from benfitzpatrick/config-edit.fix-section-ignore

rose config-edit: fix section ignore
Rose documentation: further minor improvements to the introduction
Merge pull request #326 from dpmatthews/doc.intro

Documentation: minor changes to the introduction
Merge branch 'master' into 27.rose-mpi-launch.v