add project_id to missions

db/migrate/20161228045935_add_project_id_to_mission.rb

@@ -0,0 +1,5 @@
+class AddProjectIdToMission < ActiveRecord::Migration
+  def change
+     add_column :missions, :project_id, :integer
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20161227104629) do
+ActiveRecord::Schema.define(version: 20161228045935) do
 
   create_table "comments", force: :cascade do |t|
     t.text     "content"
@@ -30,6 +30,7 @@ ActiveRecord::Schema.define(version: 20161227104629) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.string   "content"
+    t.integer  "project_id"
   end
 
   create_table "missions_users", id: false, force: :cascade do |t|