Authenticating Rails Application With Omniauth Github in Local

Question

I am working on authenticating users using GitHub in local development mode.

I am using using omniauth-github Rubygem.

I have bellow code in config/initializers/omniauth.rb

OmniAuth.config.logger = Rails.logger

Rails.application.config.middleware.use OmniAuth::Builder do
 provider :github, ENV['GITHUB_KEY'], ENV['GITHUB_SECRET'],
    {
      :client_options => {
        :site => 'https://github.com/api/v3',
        :authorize_url => 'https://github.com/login/oauth/authorize',
        :token_url => 'https://github.com/login/oauth/access_token',
      }
    }
end

In view layout I have

<%= link_to "Sign in with Github", "/auth/github" %>

In routes.rb I have

  match 'auth/:provider/callback' => 'session#create', :via => [:get, :post]
  match 'signout' => 'session#destroy', :via => [:delete], :as => 'signout'

I have registered new application in github with Homepage URL : http://localhost:3000 , Authorization callback URL : http://localhost:3000/callback

After clicking on Sign in with Github, I am getting following error.

http://localhost:3000/callback?error=redirect_uri_mismatch&error_description=The redirect_uri MUST match the registered callback URL for this application.&error_uri=https://developer.github.com/v3/oauth/#redirect-uri-mismatch&state=14216a2416431297d9690e68efe0723a03aa7a1eaee51db3

Kindly help me to set proper values for site ,authorize_url , token_url to work in local system.