Merge pull request 8thwall#6 from lpmi-13/typofix

fix simple typo

Author: atomarch

README.md

@@ -8,7 +8,7 @@ For now, here is the very rough documentation:
 2. Download and configure Google APIs Client Library for PHP
     - See https://github.com/google/google-api-php-client for install instructions.
     - The code assumes that the API directory (vendor/) will reside inside the google-auth/ plugin directory
-3. Create an an OAuth 2.0 client ID, and download the resulting JSON file (client_secrets.json)
+3. Create an OAuth 2.0 client ID, and download the resulting JSON file (client_secrets.json)
     - See https://developers.google.com/api-client-library/php/auth/web-app
     - place the client secrets file inside the google-auth/ plugin directory
 4. This plugin allows you to filter access based on domain (i.e. only @mydomain.com addresses)