Fixed repo version...
Re-inserted example usage in html doc.
HTML markup fix.
Merge pull request #322 from arjclark/env-help

rose task-env help updates and additions
Update lib/python/rose/macro.py

Remove redundant import rose.config_editor.variable.
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