transferred Code Ocean from original repository to GitHub

db/migrate/20140626144036_create_submissions.rb

@@ -0,0 +1,11 @@
+class CreateSubmissions < ActiveRecord::Migration
+  def change
+    create_table :submissions do |t|
+      t.text :code
+      t.belongs_to :exercise
+      t.float :score
+      t.belongs_to :user
+      t.timestamps
+    end
+  end
+end