various cleanups

- added Scrutinizer
- added EditorConfig
- removed closing php tags
- proper usage of require_once
- cleaned extra spacing

.scrutinizer.yml

@@ -0,0 +1,13 @@
+tools:
+    php_sim: true
+    php_pdepend: true
+    php_analyzer: true
+    php_mess_detector: true
+    php_changetracking: true
+    php_code_sniffer: true
+    php_cs_fixer: true
+    sensiolabs_security_checker: true
+
+filter:
+    excluded_paths:
+        - 'test/*'