diff --git a/README.md b/README.md
index 94e6584..99225f7 100644
--- a/README.md
+++ b/README.md
@@ -1,28 +1,12 @@
-# SyncNtnuPersonalData
-Short description and motivation.
-
-## Usage
-How to use my plugin.
-
-## Installation
-Add this line to your application's Gemfile:
-
+# Usage
+## at the target app, not this Orbit module(Rails Engine)
+* create project\_root\/config\/initializers\/ntnu\_sybase\_config.rb with following content:
 ```ruby
-gem 'sync_ntnu_personal_data'
+ENV['USER_NAME'] = 'database user name'
+ENV['PASSWORD'] = 'database password'
+ENV['NTNU_DB_HOST'] = 'database host'
+ENV['NTNU_DB_PORT'] = 'database port'
+ENV['TDS_VERSION'] = '5.0'
+ENV['DB_NAME'] = 'database name'
 ```
-
-And then execute:
-```bash
-$ bundle
-```
-
-Or install it yourself as:
-```bash
-$ gem install sync_ntnu_personal_data
-```
-
-## Contributing
-Contribution directions go here.
-
-## License
-The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).
+* set cron job to run `bundle exec rake sync_personal_plugins:sync` everyday