awesome-php.md

@@ -215,6 +215,7 @@ A list of amazingly awesome PHP libraries that you should consider using (and so
 * [How Big Are PHP Arrays (And Values) Really?](http://nikic.github.com/2011/12/12/How-big-are-PHP-arrays-really-Hint-BIG.html) - An article about array internals.
 * PHP Source Code for Developers: [1](http://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers.html) [2](http://nikic.github.com/2012/03/16/Understanding-PHPs-internal-function-definitions.html) [3](http://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers_21.html) [4](http://nikic.github.com/2012/03/28/Understanding-PHPs-internal-array-implementation.html) - A series about the PHP source code.
 * Collecting Garbage: [1](http://derickrethans.nl/collecting-garbage-phps-take-on-variables.html) [2](http://derickrethans.nl/collecting-garbage-cleaning-up.html) [3](http://derickrethans.nl/collecting-garbage-performance-considerations.html) - A series about the PHP garbage collection internals.
+* [Composer Primer](http://daylerees.com/composer-primer) - A Composer primer.
 * [Composer Versioning](https://igor.io/2013/01/07/composer-versioning.html) - An article about Composer versioning.
 * [Composer Stability Flags](https://igor.io/2013/02/07/composer-stability-flags.html) - An article about Composer stability flags.
 * [PHP Sucks! But I Like It!](http://blog.ircmaxell.com/2012/04/php-sucks-but-i-like-it.html) - An article about the pros and cons of PHP.