Add Certificate

Author: guiihdourado

composer.json

@@ -26,7 +26,8 @@
         "php": "^7.0",
         "respect/validation": "^1.1",
         "ferfabricio/hydrator": "^2.0",
-        "guzzlehttp/guzzle": "~6.0"
+        "guzzlehttp/guzzle": "~6.0",
+        "maciejczyzewski/bottomline": "^0.2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "~6.5.13"