Add config to allow running FactoryGirl lint before suit

By default the lint will be run before every test suit.
Set it to false in config.yml if you would rather just use the rake
task: `bundle exec rake factory_girl:lint`

config/config.yml.example

@@ -15,6 +15,10 @@ defaults: &defaults
     ichain:
       enabled: false
 
+  # Set it to false if you don't want FactoryGirl lint to run before every test suit.
+  # You can run lint manually with: bundle exec rake factory_girl:lint
+  factory_girl_lint: true
+
 development:
   <<: *defaults
 

spec/support/factory_girl.rb

@@ -0,0 +1,7 @@
+RSpec.configure do |config|
+
+  config.before(:suite) do
+    FactoryGirl.lint if CONFIG['factory_girl_lint']
+  end
+
+end