Changes to Permissions
   * Makes public default principalId
   * Allows for emails to get/setPermissions
Comment change
Correct grammar in error message
Merge pull request #119 from larsssono/master

Changes to Permissions
forgot to add this file to the docs!
added improved error message as a temporary measure until createOrUpdate works for wikis (SYNR-631)
When name is not given, entities should be named for the file they contain
merge annotations in createOrUpdate on entities
note TODO implement createOrUpdate for Wikis