remove bundled phing dependency

README.md

@@ -18,6 +18,25 @@ you'll have to change the code in each Task's `main()` method.
 }
 ```
 
+[Phing](https://github.com/phingofficial/phing) is **not** bundled with this package.
+
+You can install it through Composer and use the CLI at `vendor/bin/phing`:
+
+```json
+{
+    "require": {
+        "phing/phing": "*"
+    }
+}
+```
+
+or through PEAR and use the CLI at `phing`:
+
+```sh
+$ pear channel-discover pear.phing.info
+$ pear install [--alldeps] phing/phing
+```
+
 # Usage
 
 ## ClassmapTask

composer.json

@@ -16,7 +16,6 @@
     },
     "require": {
         "php": ">=5.3.3",
-        "phing/phing": "*",
         "symfony/yaml": "2.0.*",
         "zendframework/zendframework": "2.*",
         "heartsentwined/zf2-doctrine": "1.*",