add task for sowing the development seeds

lib/tasks/devseed.rake

@@ -0,0 +1,9 @@
+require 'factory_girl'
+
+task :sow => :environment do
+  users = FactoryGirl.create_list(:user, 20)
+  100.times do
+    FactoryGirl.create :transaction, debtor: users.sample, creditor: users.sample
+  end
+end
+