Create requirement-writing guide/template

[camerons]

Create requirement-writing guide

Template description

There are a range of best practices for writing a good requirement. One version is:

• After one year of level-2 usage, the battery-life, MUST, last 10 hours, when running level-3 applications.
• {Condition} the {subject} {compliance} {verb} {object} {qualification}

Tasks

• @camerons has developed a requirement-writing guide within Google, and has obtained legal approval to release this material to The Good Docs Project. @camerons to copy the material into github.
• Possibly add a simple template file, to complement the guide.
• Review the material and possibly refine to align with style practices within The Good Docs Project.

Helpful resources

• Template Contributing Process
• Template deliverables
• Template roles and resources

[camerons]

First import of material is in https://github.com/thegooddocsproject/templates/tree/requirements/requirement