rel #41044 : declare autoload

composer.json

 {
   "name": "afi/linse",
   "description": "Linse (lens in Deutch) is a tool to convert and transform texts.",
+  "autoload": {
+    "classmap": ["Linse.php"]
+  },
   "require-dev": {
     "phpunit/phpunit": "^5.2"
   },