Merge pull request #810 from GusCaplan/message#type

add message#type
GUS promises that this was thoroughly tested. I wanna believe him. Hydra don't kill me for merging.

src/structures/Message.js

@@ -32,6 +32,12 @@ class Message {
      */
     this.id = data.id;
 
+    /**
+     * The type of the message
+     * @type {string}
+     */
+    this.type = Constants.MessageTypes[data.type];
+
     /**
      * The content of the message
      * @type {string}

src/util/Constants.js

@@ -227,6 +227,16 @@ exports.WSEvents = {
   VOICE_SERVER_UPDATE: 'VOICE_SERVER_UPDATE',
 };
 
+exports.MessageTypes = {
+  0: 'DEFAULT',
+  1: 'RECIPIENT_ADD',
+  2: 'RECIPIENT_REMOVE',
+  3: 'CALL',
+  4: 'CHANNEL_NAME_CHANGE',
+  5: 'CHANNEL_ICON_CHANGE',
+  6: 'PINS_ADD',
+};
+
 const PermissionFlags = exports.PermissionFlags = {
   CREATE_INSTANT_INVITE: 1 << 0,
   KICK_MEMBERS: 1 << 1,