added mutations to Gemfile.
set app to automatically find all mutations in app/mutations.
UserCreate mutation plus tests.
update and destroy mutators for User.
Merge branch 'master' into mutations
Merge branch 'master' into mutations
Merge branch 'master' into mutations
added scholar to Gemfile.
defined Source#citation= and Source#citation to serialize and deserialize Scholar objects in database.
create Source with mutation.
added Source update mutation.
singular names for mutation categories.
namespace mutations within respective models.
Source::Update specs.
Source::Destroy and Source factory.
project creator mutation.
Project::Update (untested).
specs for Project::Update.
Project::Destroy mutations.
mutations refactoring.