diff --git a/README.md b/README.md
index eac3012..beccfa2 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,18 @@
 #EXAMUS MOODLE PLUGIN
 
+## Requirements
+1. Examus plugin was tested with Moodle 3.1 version
+2. Examus proctoring needs OAuth2 server plugin installed. You can install it from https://github.com/examus/moodle-local_oauth/releases 
+3. To install plugin, download zip archive, go into your Moodle admin section, navigate to `Administration→Plugins→Install plugins`, put downloaded zip in box and press `Install` button. 
+
+If you have Oauth2 server installed from another source, **please make sure it allows HTTPS url as Redirect URL**
+
 ## Installation
-1. Download zip [here](https://github.com/examus/moodle-availability_examus/releases/), open `Administration→Plugins→Install plugins`, put zip there
-2. Go to `Administration→WebServices→Manage Tokens`, Add token for service Examus for Admin User. Examus will use this token for integration
+1. Download zip from https://github.com/examus/moodle-availability_examus/releases/, open `Administration→Plugins→Install plugins`, put zip there
+2. Go to `Administration→WebServices→Manage Tokens`, Add token for service Examus for Admin User. Examus will use this token for integration.
+3. Go to `Administration→Server→OAuth provider settings`, press `Add new client`.
+4. You can use any Client identifier, for example 'Examus'. To get 'Redirect URL', please contact us. After saving new client, Examus proctoring service will use your `Client identifier` and generated `Client secret Key` to authenticate your users  
 
 ## Usage
 1. In course editing mode, `Edit settings` for module, scroll down to `Restrict access`
-2. Choose `Add restrictions... → Examus` to enable proctoring for this module.
+2. Choose `Add restrictions... → Examus` to enable proctoring for this module. Please, specify duration of proctoring session. If you already have time restriction for module ('Quiz'), proctoring session duration must match time restriction setting. 
diff --git a/version.php b/version.php
index 255ee0a..7bfa120 100644
--- a/version.php
+++ b/version.php
@@ -3,7 +3,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'availability_examus';
-$plugin->version = 2016111503;
+$plugin->version = 2016120100;
 $plugin->release = 'v3.1-r1';
 $plugin->requires = 2016052300;
 $plugin->maturity = MATURITY_STABLE;