Fixed a couple small things; added database stuff

db/migrations/0001_add_messages_table.rb

@@ -0,0 +1,16 @@
+Sequel.migration do
+
+  up do
+    create_table(:messages) do
+      primary_key :id
+      String :body, null: false
+      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
+      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
+    end
+  end
+
+  down do
+    drop_table(:messages)
+  end
+
+end