add scrutinzer config

.scrutinizer.yml

@@ -0,0 +1,13 @@
+build:
+  nodes:
+    analysis:
+      tests:
+        override:
+          - php-scrutinizer-run
+tools:
+  php_sim: true
+  php_pdepend: true
+  php_analyzer: true
+filter:
+  excluded_paths:
+    - 'tests/*'