Added license-check to QA toolchain

- Now require `malukehno/docheader` in development.
- Added configuration via `.docheader`.
- `license-check` will check all `src/` files.
- `license-check-all` will check all `src/` and `test/` files; there are
  test assets that are _expected_ to fail.
- Travis runs `license-check` for targets doing CS checks.

.docheader

@@ -0,0 +1,5 @@
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) %regexp:(20\d{2}-)?20\d{2}% Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */

.travis.yml

@@ -80,6 +80,7 @@ install:
 script:
   - if [[ $TEST_COVERAGE == 'true' ]]; then composer test-coverage ; else composer test ; fi
   - if [[ $CHECK_CS == 'true' ]]; then composer cs-check ; fi
+  - if [[ $CHECK_CS == 'true' ]]; then composer license-check ; fi
   - if [[ $DEPLOY_DOCS == "true" && "$TRAVIS_TEST_RESULT" == "0" ]]; then travis_retry curl -sSL https://raw.githubusercontent.com/zendframework/zf-mkdoc-theme/master/theme-installer.sh | bash ; fi
 
 after_script:

composer.json

@@ -18,12 +18,13 @@
         "psr/container": "^1.0"
     },
     "require-dev": {
+        "zendframework/zend-coding-standard": "~1.0.0",
         "zendframework/zend-filter": "^2.7.1",
         "zendframework/zend-i18n": "^2.7.3",
         "zendframework/zend-json": "^2.6.1 || ^3.0",
         "zendframework/zend-servicemanager": "^2.7.8 || ^3.2.1",
-        "phpunit/phpunit": "^5.7 || ^6.0",
-        "zendframework/zend-coding-standard": "~1.0.0"
+        "malukenho/docheader": "^0.1.5",
+        "phpunit/phpunit": "^5.7 || ^6.0"
     },
     "conflict": {
         "container-interop/container-interop": "<1.2.0"
@@ -49,11 +50,14 @@
     },
     "scripts": {
         "check": [
+            "@license-check",
             "@cs-check",
             "@test"
         ],
         "cs-check": "phpcs",
         "cs-fix": "phpcbf",
+        "license-check": "docheader check src/",
+        "license-check-all": "docheader check src/ test/",
         "test": "phpunit --colors=always",
         "test-coverage": "phpunit --colors=always --coverage-clover clover.xml",
         "upload-coverage": "coveralls -v"