Updating README.md and INSTALL files

INSTALL

@@ -1 +1 @@
-See (Installation guide)[https://github.com/Patrowl/PatrowlDocs/blob/master/installation/installation-guide.md]
+See [Installation guide](https://github.com/Patrowl/PatrowlDocs/blob/master/installation/installation-guide.md)

README.md

@@ -0,0 +1,34 @@
+![](https://github.com/Patrowl/PatrowlDocs/blob/master/images/logos/logo-patrowl-light.png)
+
+[![Join the chat at https://gitter.im/Patrowl/Support](https://badges.gitter.im/Patrowl/Support.png)](https://gitter.im/Patrowl/Support)
+
+# **PatrOwl**
+[PatrOwl](https://www.patrowl.io/) is a scalable, free and open-source solution for orchestrating Security Operations.
+
+**PatrowlEngines** is the engine framework and the supported list of engines performing the operations (scans, searches, API calls, ...) on due time. The engines are managed by one or several instance of [PatrowlManager](https://github.com/Patrowl/PatrowlManager/).
+
+# Architecture
+![Technical Overview](https://github.com/Patrowl/PatrowlDocs/blob/master/images/userguide/technical-overview.png)
+
+# Installation and deployment
+See the [Installation guide](https://github.com/Patrowl/PatrowlDocs/blob/master/installation/installation-guide.md)
+
+# Usage
+See the [User guide](https://github.com/Patrowl/PatrowlDocs/blob/master/installation/user-guide.md)
+
+# License
+PatrOwl is an open source and free software released under the [AGPL](https://github.com/Patrowl/PatrowlDocs/blob/master/LICENSE) (Affero General Public License). We are committed to ensure that PatrOwl will remain a free and open source project on the long-run.
+
+# Updates
+Information, news and updates are regularly posted on [Patrowl.io  Twitter account](https://twitter.com/patrowl_io) and on [the  blog](https://blog.patrowl.io/).
+
+# Contributing
+Please see our [Code of conduct](https://github.com/Patrowl/PatrowlDocs/blob/master/docs/support/code_of_conduct.md). We welcome your contributions. Please feel free to fork the code, play with it, make some patches and send us pull requests via [issues](https://github.com/Patrowl/PatrowlManager/issues).
+
+# Support
+Please [open an issue on GitHub](https://github.com/Patrowl/PatrowlManager/issues) if you'd like to report a bug or request a feature. We are also available on [Gitter](https://gitter.im/Patrowl/Support) to help you out.
+
+If you need to contact the project team, send an email to <[email protected]>.
+
+# Copyright
+Copyright (C) 2018 Nicolas MATTIOCCO  ([@MaKyOtOx](https://twitter.com/MaKyOtOx) - [email protected])