Added PHP_CodeSniffer config

Author: sergeyklay

phpcs.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<ruleset name="Phalcon Diff">
+    <description>Phalcon Diff Coding Standards</description>
+
+    <!-- Show colors in console -->
+    <arg value="-colors"/>
+
+    <!-- Show sniff codes in all reports -->
+    <arg value="s"/>
+
+    <!-- Use PSR-2 as a base -->
+    <rule ref="PSR2"/>
+</ruleset>