Added PHP naming conventions

php.md

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+PHP / Symofny2 Stuff
+====================
+
+Code Style
+----------
+
+* Follow [Symonfy2](http://symfony.com/doc/current/contributing/code/standards.html) coding standards which follow [PSR-0](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md), [PSR-1](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-1-basic-coding-standard.md) & [PSR-2](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)
+* 4 Spaces not Tabs
+* https://github.com/opensky/Symfony2-coding-standard
+
+Relationships
+-------------
+
+* Access major relationships through repository methods rather than getters.
+  * Smaller joins on initial object load
+  * Allows filtering on relationship
+* Consider  [preloading loading `many to one` and `one to one`](http://whitewashing.de/2013/02/19/extending_symfony2__paramconverter.html)
+
+DocBlock / Annotations
+----------------------
+
+* Follow [Symonfy2](http://symfony.com/doc/current/contributing/code/standards.html)
+
+### Exceptions
+
+* Symonfy2 custom annotations are after the description / long description and before `@params`
+* Symfony2 custom annotations are split with a line break and boundaried by blank lines
+
+```php
+/**
+ * Description
+ *
+ * Longer description
+ *
+ * @View(...)
+ * @Route(...)
+ *
+ * @param string $dummy Some argument description
+ * @param array  $options
+ *
+ * @return string|null Transformed input
+ *
+ * @throws \RuntimeException
+ */
+```