Add scrutinizer-ci.

Signed-off-by: crynobone <[email protected]>

.gitattributes

@@ -5,6 +5,7 @@
 /tests              export-ignore
 /.coveralls.yml     export-ignore
 /.gitignore         export-ignore
+/.scrutinizer.yml   export-ignore
 /.travis.yml        export-ignore
 /Guardfile          export-ignore
 /LICENSE.md         export-ignore

.scrutinizer.yml

@@ -0,0 +1,28 @@
+before_commands:
+    - 'composer install --prefer-source --no-interaction --dev'
+filter:
+    paths:
+        - 'src/*'
+    excluded_paths:
+        - 'build/*'
+        - 'vendor/*'
+        - 'tests/*'
+tools:
+    php_mess_detector: true
+    php_code_sniffer:
+        config:
+            standard: PSR1
+    php_code_coverage:
+        config_path: phpunit.xml
+    php_cpd:
+        excluded_dirs:
+            - vendor
+            - tests
+    php_loc:
+        excluded_dirs:
+            - vendor
+            - tests
+    php_pdepend:
+        excluded_dirs:
+            - vendor
+            - tests