Merge pull request #1 from csrdelft/refactor

Refactor and add some tests

.gitignore

@@ -1 +1,2 @@
 .idea
+vendor

.travis.yml

@@ -0,0 +1,16 @@
+language: php
+php:
+  - 7.2
+
+dist: trusty
+
+cache:
+  directories:
+    - "node_modules"
+    - "vendor"
+
+install:
+  - composer install
+
+script:
+  - composer test

README.md

@@ -68,13 +68,17 @@ A tag has access to an environment, which is by default of type `CsrDelft\bb\BBe
 
 ```php
 class BbSuperscript extends BbTag {
-	public function getTagName() {
+	public static function getTagName() {
 		return 'sup';
 	}
 
-	public function parse($arguments = []) {
-		return '<sup class="bb-tag-sup">' . $this->getContent(['sub', 'sup']) . '</sup>';
+	public function render() {
+		return '<sup class="bb-tag-sup">' . $this->content . '</sup>';
 	}
+
+    public function parse($arguments = []) {
+         $this->readContent(['sub', 'sup'])
+       }
 }
 ```
 

composer.json

@@ -17,5 +17,12 @@
     "psr-4": {
       "CsrDelft\\bb\\": "src/"
     }
+  },
+  "scripts": {
+    "test": "@php vendor/phpunit/phpunit/phpunit tests"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^8.3",
+    "spatie/phpunit-snapshot-assertions": "^2.1"
   }
 }