FIX Update directory structure for PSR-4 compatibility and rename "code" to "src"

.scrutinizer.yml

@@ -6,4 +6,4 @@ checks:
     duplication: true
 
 filter:
-  paths: [code/*, tests/*]
+  paths: [src/*, tests/*]

.travis.yml

@@ -28,7 +28,7 @@ before_script:
 script:
   - if [[ $PHPUNIT_TEST ]]; then vendor/bin/phpunit; fi
   - if [[ $PHPUNIT_COVERAGE_TEST ]]; then phpdbg -qrr vendor/bin/phpunit --coverage-clover=coverage.xml; fi
-  - if [[ $PHPCS_TEST ]]; then vendor/bin/phpcs --standard=vendor/silverstripe/framework/phpcs.xml.dist code tests; fi
+  - if [[ $PHPCS_TEST ]]; then vendor/bin/phpcs --standard=vendor/silverstripe/framework/phpcs.xml.dist src tests; fi
 
 after_success:
   - if [[ $PHPUNIT_COVERAGE_TEST ]]; then bash <(curl -s https://codecov.io/bash) -f coverage.xml; fi

composer.json

@@ -31,7 +31,7 @@
     },
     "autoload": {
         "psr-4": {
-            "SilverStripe\\FullTextSearch\\": "code/",
+            "SilverStripe\\FullTextSearch\\": "src/",
             "SilverStripe\\FullTextSearch\\Tests\\": "tests/"
         }
     },

phpunit.xml.dist

@@ -5,7 +5,7 @@
 
     <filter>
         <whitelist addUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">code/</directory>
+            <directory suffix=".php">src/</directory>
             <exclude>
                 <directory suffix=".php">tests/</directory>
             </exclude>