re-adding sports proposal.
Competion -> Competition
refreshed with version from JasonJ.
Also removing the older def for memberOf
adding examples from sports doc.
testing
...
Merge branch 'master' of https://github.com/rvguha/schemaorg

Conflicts:
	data/examples.txt
Merge branch 'master' of https://github.com/rvguha/schemaorg
Moved super/sub -property metadata into per-term pages, alongside inverseOf.

There is scope to improve the UI. Having single-item tables feels heavy, but
we do that for super-property (rare to have multiple of these). However inverseOf
is handled with a simple paragraph on its own.
Removed draft sports. Added license.
Made member and memberOf symmetrical, and allowed for memberOf to apply to an Organization too.
This is a useful fix generally, but is needed for Sports in particular.
Adding Role, TheatricalRole, and adjusting startDate, endDate to take Role.
Updated domain/range-includes statements for startDate, endDate.
Added Role and its subtypes and example properties.
Wording tweaks around Role.
Marking musicGroupMember as supercededBy member.
Merged in Jason Johnson's text for namedPosition.
Updated OrganizationRole with Jason Johnson's better definition text.
Replaced a test that mistakenly asserted that suggestedAnswer had a superproperty.
per https://help.github.com/articles/dealing-with-line-endings