Incorporate Dong-Young's suggested changes to the Scope:
<http://lists.w3.org/Archives/Public/public-webscreens/2014May/0005.html>
Clarify Other Deliverables section as per Mounir's feedback:
<http://lists.w3.org/Archives/Public/public-webscreens/2014May/0009.html>
Fix typo.
Merge pull request #1 from mounirlamouri/patch-1

Fix typo.
Further clarify the use cases and requirements in Other Deliverables.
Clarification of discovery and availability, wording suggestions
Merge pull request #3 from drott/gh-pages

Clarification of discovery and availability, wording suggestions
Tidy.
Merge upstream