[Doppins] Upgrade dependency simple-markdown to ^0.3.1 (#293)

* Upgrade dependency simple-markdown to ^0.3.0

* Upgrade dependency simple-markdown to ^0.3.1

Author: doppins-bot

package.json

@@ -43,7 +43,7 @@
     "irc-colors": "^1.3.2",
     "irc-formatting": "^1.0.0-rc3",
     "lodash": "^4.17.4",
-    "simple-markdown": "^0.2.1",
+    "simple-markdown": "^0.3.1",
     "strip-json-comments": "2.0.1",
     "winston": "2.3.1"
   },