Update composer.json

composer.json

 {
     "name": "anhskohbo/no-captcha",
     "description": "No CAPTCHA reCAPTCHA For Laravel.",
+    "keywords": ["recaptcha", "no-captcha", "captcha", "laravel", "laravel4", "laravel5"],
+    "license": "MIT",
     "authors": [
         {
             "name": "anhskohbo",