#528 - Check if a url is embeddable in an iframe in the PP
Switch object and target in add-group-member activity to conform to activitystrea.ms
return full group profile on update
Update README.md to reflect nodejs version info
Revert node-validator to pre-1.2.0 due to API incompatibility
Added a timeout when checking if a link is embeddable.
Check style fix in default link processor.
Merge remote-tracking branch 'origin/master'
Merge pull request #535 from mrvisser/activity-add-group-member

Switch object and target in add-group-member activity to conform to acti...
Merge pull request #537 from stuartf/groupUpdate

Update a group response has missing parameters
Merge pull request #528 from simong/issue-528-check-links-embeddable

Detect links that don't allow iframe embedding
Merge pull request #539 from mrvisser/revert-node-validator

Revert node-validator to pre-1.2.0 due to API incompatibility
Merge remote-tracking branch 'origin/master'