Merge pull request #12 from adlnet/master

update garemoko master to adlnet
Merge pull request #13 from adlnet/master

update adlnet master to garemoko
fix error in result heading
Added note about new agents/activities in the document API

Fixes https://github.com/adlnet/xAPI-Spec/issues/93
amended as suggested by Ben
Merge pull request #95 from garemoko/LRSshouldAcceptDocuments

LRS should accept documents for unknown agents and activities