Docs: update composer.json

- Add README.md path
- Add version key

Author: codepane

composer.json

@@ -2,9 +2,11 @@
     "name": "codepane/laravel-image-handler",
     "description": "Optimize and store images in multiple sizes easily.",
     "type": "library",
+    "version": "0.3",
     "require": {
         "intervention/image": "^2.7"
     },
+    "readme": "README.md"
     "license": "MIT",
     "autoload": {
         "psr-4": {