Removing grape and adding devise

db/migrate/20160305115639_add_devise_to_users.rb

@@ -0,0 +1,38 @@
+class AddDeviseToUsers < ActiveRecord::Migration
+  def self.up
+    change_table(:users) do |t|
+      ## Database authenticatable
+      t.string :encrypted_password, null: false, default: ""
+
+      ## Recoverable
+      t.string   :reset_password_token
+      t.datetime :reset_password_sent_at
+
+      ## Rememberable
+      t.datetime :remember_created_at
+
+      ## Trackable
+      t.integer  :sign_in_count, default: 0, null: false
+      t.datetime :current_sign_in_at
+      t.datetime :last_sign_in_at
+      t.inet     :current_sign_in_ip
+      t.inet     :last_sign_in_ip
+    end
+
+    add_index :users, :reset_password_token, unique: true
+  end
+
+  def self.down
+    remove_index :users, :reset_password_token
+
+    remove_column :users, :encrypted_password
+    remove_column :users, :reset_password_token
+    remove_column :users, :reset_password_sent_at
+    remove_column :users, :remember_created_at
+    remove_column :users, :sign_in_count
+    remove_column :users, :current_sign_in_at
+    remove_column :users, :current_sign_in_ip
+    remove_column :users, :last_sign_in_at
+    remove_column :users, :last_sign_in_ip
+  end
+end