Upated icon links in readme.

Author: derhasi

icons/README.md

@@ -4,19 +4,19 @@ The icons contained in this directory may only be used by following li
 
 ## bulb.svg
 
-![bulb.svg](bulb.svg)
+![bulb.svg](https://raw.githubusercontent.com/drupal-composer/drupal-composer.github.io/master/icons/bulb.svg)
 
 *[Created by Félix Péault from the Noun Project](http://thenounproject.com/term/light-bulb/23392/): This icon is licensed as Creative Commons – Attribution (CC BY 3.0)
 
 ## code.svg
 
-![code.svg](code.svg)
+![code.svg](https://raw.githubusercontent.com/drupal-composer/drupal-composer.github.io/master/icons/code.svg)
 
 *[Created by Ryan Beck from the Noun Project](http://thenounproject.com/term/code/20721/): This icon is licensed as Creative Commons – Attribution (CC BY 3.0)
 
 ## drupal-packagist.svg
 
-![drupal-packagist.svg](drupal-packagist.svg)
+![drupal-packagist.svg](https://raw.githubusercontent.com/drupal-composer/drupal-composer.github.io/master/icons/drupal-packagist.svg)
 
 Combined two icons