phpcs improvements

- don't search inside node_modules (inefficient)
- handle spaces inside PHP filenames (perhaps unnecessary)
- show rule codes in all reports (-s option)

.travis.yml

@@ -56,7 +56,11 @@ script:
     fi
   - |
     if [[ "$TRAVISCI" == "phpcs" ]] ; then
-      phpcs --standard=phpcs.ruleset.xml $(find . -name '*.php')
+      find . \
+        -not \( -path './node_modules' \) \
+        -not \( -path './vendor' \) \
+        -name '*.php' \
+      | xargs -d'\n' phpcs --standard=phpcs.ruleset.xml -s
     fi
   - |
     if [[ "$TRAVISCI" == "js" ]] ; then

phpcs.ruleset.xml

@@ -4,7 +4,4 @@
 
 	<rule ref="WordPress-Core" />
 	<rule ref="WordPress-Docs" />
-
-	<exclude-pattern>*/node_modules/*</exclude-pattern>
-	<exclude-pattern>*/vendor/*</exclude-pattern>
 </ruleset>