Update Emoji and Markdown packages

composer.json

@@ -22,7 +22,7 @@
         "php": ">=5.5.9",
         "laravel/framework": "~5.2.6",
         "alt-three/bus": "^1.0",
-        "alt-three/emoji": "^2.1",
+        "alt-three/emoji": "^3.0",
         "alt-three/validator": "^1.4",
         "asm89/stack-cors": "dev-master as 0.2.2",
         "barryvdh/laravel-cors": "^0.7.3",
@@ -30,7 +30,7 @@
         "fideloper/proxy": "^3.1",
         "graham-campbell/binput": "^3.3",
         "graham-campbell/core": "^4.2",
-        "graham-campbell/markdown": "^5.3",
+        "graham-campbell/markdown": "^6.0",
         "graham-campbell/throttle": "^5.1",
         "graham-campbell/exceptions": "^8.1",
         "guzzlehttp/guzzle": "^6.1",