diff --git a/README.md b/README.md
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+## Redmine omniauth google
+
+This plugin is used to authenticate in redmine through Google.
+
+### Installation:
+
+Choose folder /plugins, make command git clone git@gitlab.tsdv.net:redmine_omniauth_google.git. Restart rails server.
+
+### Registration
+
+To make possible to authenticate via Google you must first to register application in Google
+
+* Go to the [registration](https://code.google.com/apis/console) link. 
+* Press "API Access" in left menu bar.
+* Click the button "Create an OAuth 2.0 client ID".
+* When registering specify application name, for example, Redmine Oauth Google.
+* In section "Your site or hostname" choose mode http, in the text input box enter your domain, for example, yourdomain.com. 
+* Press the button "Create client ID".
+
+The registrations is complete.
+
+### Configuration
+
+* Login as administrator. In top menu select "Administration". Choose menu item Plugins. In plugins list choose "Redmine Omniauth Google plugin". Press "Configure". 
+* Fill Сlient ID & Client Secret by corresponding values, obtained by Google. 
+* Put the check "Oauth authentification", to make it possible to login through Google. Click Apply. Users can now to use apportunity to login via Google.
+
+To limit login through Google for other domains you have to fill allowed domains in the text box field the "Allowed domains". Domains must be separated by newlines. For example:
+
+onedomain.com
+otherdomain.com
+
+### Work process
+
+User goes to the login page(sign in). User clicks the button with Google image. The plugin redirects him to Google. User enters his the еmail & password from Google. Google redirect user back to plugins controller. Then the following cases:
+1. If auto registration is enabled, user is redirected to 'my/page'
+2. In  others cases user is redirected to 'login'.
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diff --git a/config/routes.rb b/config/routes.rb
index 269600beafe4b54b2aca6ea39bdf5eda22a036f8..e9e7852fbe4434024344287f6560fb690d5b5b84 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,2 +1,2 @@
 get 'oauth_google', to: 'redmine_oauth#oauth_google'
-get 'oauth_google_callback', to: 'redmine_oauth#oauth_google_callback'
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+get 'oauth2callback', to: 'redmine_oauth#oauth_google_callback'
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