Update README.md

Author: SamuelTallet

docs/README.md

@@ -1 +1,22 @@
-# MongoDB PHP GUI v0.9.0
+# Free MongoDB GUI powered by PHP
+
+Visually administrate your MongoDB database. Create, read and delete operations are supported.
+
+Screenshots
+-----------
+
+![MongoDB PHP GUI](https://raw.githubusercontent.com/SamuelTS/MongoDB-PHP-GUI/master/docs/mpg.png)
+
+Installation
+------------
+
+1. `git clone` current repository somewhere in the cloud or on your local machine.
+2. Be sure to have PHP >= 7 with [MongoDB extension](https://www.php.net/manual/en/mongodb.installation.php) enabled in this environment.
+3. Run `composer install` at project's root directory to install all PHP dependencies.
+
+Configuration
+-------------
+
+Open *config.php* file located at projet's root directory. Edit following constants values:
+
+`MPG_MONGODB_USER`, `MPG_MONGODB_PASSWORD`, `MPG_MONGODB_HOST` and `MPG_MONGODB_PORT`.