Feature(README): Installation guide

Author: ovr

README.md

@@ -1,3 +1,22 @@
 Lowl Coding Standart
 ====================
 
+# Installation
+
+The easist and true way to install Lowl CS is: installation as a composer dependency to your particular project.
+Just add the following block to your project's `composer.json` file:
+
+```bash
+php composer require lowl/coding-standard:~0.1.0
+```
+
+Then you can use it like:
+
+```bash
+./vendor/bin/phpcs --standard=Lowl ./
+```
+
+# LICENSE
+
+MIT
+