Finish user signup

app/controllers/users_controller.rb

-class UsersController < ApplicationController
-  
-  def show 
-    @user = User.find(params[:id])
-  end
-  
-  def new
-    @user = User.new
-  end
-  
-  def create
-    @user = User.new(user_params)
-    if @user.save
-      flash[:success] = "Welcome to the Sample App!"
-      redirect_to @user
-    else
-        render 'new'
-    end
-  end
-
-  private 
-
-  def user_params
-    params.require(:user).permit(:name, :email, :password,
-                                  :password_confirmation)
-  end
-end