v0.1.2

• Includes xAPI interactive activities
• Removed call_async method from RailsXapi::StatementCreator, in favor of merging it into the call method.
• Query service changes (see query_spec.rb):
  • Renaming the class for RailsXapi::Query
  • The new class references all query methods and can be called as follows: RailsXapi::Query.call(query: :verb_ids)