diff --git a/INSTALL.md b/INSTALL.md
new file mode 100644
index 0000000..bbac44b
--- /dev/null
+++ b/INSTALL.md
@@ -0,0 +1,47 @@
+# Installing poche
+
+Get the [latest twig version](https://github.com/inthepoche/poche/archive/twig.zip) of poche on github. Unzip it and upload it on your server.
+
+your datas can be stored on sqlite, postgres or mysql databases.
+
+Edit /inc/poche/config.inc.php :
+
+```php
+define ('STORAGE','sqlite'); # postgres, mysql, sqlite
+define ('STORAGE_SERVER', 'localhost'); # leave blank for sqlite
+define ('STORAGE_DB', 'poche'); # only for postgres & mysql
+define ('STORAGE_SQLITE', './db/poche.sqlite');
+define ('STORAGE_USER', 'user'); # leave blank for sqlite
+define ('STORAGE_PASSWORD', 'pass'); # leave blank for sqlite
+```
+
+poche must have write access on assets, cache and db directories.
+
+[PHP cURL](http://www.php.net/manual/en/book.curl.php) & [tidy_parse_string](http://www.php.net/manual/en/tidy.parsestring.php) are recommended.
+
+## storage in sqlite 
+You have to install [sqlite for php](http://www.php.net/manual/en/book.sqlite.php) on your server.
+
+Copy /install/poche.sqlite in /db
+
+## storage in mysql
+Execute /install/mysql.sql file in your database.
+
+## storage in postgres 
+Execute /install/postgres.sql file in your database.
+
+Install composer in your project : 
+```bash
+curl -s http://getcomposer.org/installer | php
+```
+Install via composer : 
+```bash
+php composer.phar install
+```
+
+## updating from poche 0.3
+With poche <= 0.3, all your datas were stored in a sqlite file. The structure of this file changed. 
+
+You have to execute http://yourpoche/install/update_sqlite_from_0_to_1.php before using this new version.
+
+That's all, you can use poche ! 
\ No newline at end of file
diff --git a/README.md b/README.md
index f401562..25385da 100644
--- a/README.md
+++ b/README.md
@@ -11,26 +11,6 @@ To get news from poche, [follow us on twitter](http://twitter.com/getpoche) or [
 
 [![flattr](http://api.flattr.com/button/flattr-badge-large.png)](http://flattr.com/thing/1265480/poche-a-read-it-later-open-source-system)
 
-## Requirements & installation
-You have to install [sqlite for php](http://www.php.net/manual/en/book.sqlite.php) on your server.
-
-[PHP cURL](http://www.php.net/manual/en/book.curl.php) & [tidy_parse_string](http://www.php.net/manual/en/tidy.parsestring.php) are recommended.
-
-Get the [latest version](https://github.com/inthepoche/poche) of poche on github. Unzip it and upload it on your server. poche must have write access on assets, cache and db directories.
-
-Copy db/poche.sqlite.in to db/poche.sqlite
-
-Install composer in your project : 
-```bash
-curl -s http://getcomposer.org/installer | php
-```
-Install via composer : 
-```bash
-php composer.phar install
-```
-
-That's all, you can use poche ! 
-
 ## Security
 You **have** to protect your db/poche.sqlite file. Modify the virtual host of your website to add this condition :
 ```apache