Added link to Packagist to readme

readme.md

@@ -12,7 +12,7 @@ Features
 * Callback functions can be specified as closures (like `function ($v) { return $v; }`), PHP "function pointers" (either strings like `'strnatcmp'` or arrays like `array($object, 'methodName')`), string "lambdas" using various syntaxes (`'"$k = $v"'`, `'$v ==> $v+1'`, `'($v, $k) ==> $v + $k'`, `'($v, $k) ==> { return $v + $k; }'`).
 * Keys are as important as values. Most callback functions receive both values and the keys; transformations can be applied to both values and the keys; keys are never lost during transformation, if possible.
 * SPL interfaces `Iterator`, `IteratorAggregate` etc. are used throughout the code and can be used interchangeably with Enumerable.
-* Composer support with autoloading
+* Composer support with autoloading ([package](https://packagist.org/packages/athari/yalinqo) on Packagist).
 
 Implemented methods
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