Added GuildMember.ban()

src/client/rest/RESTMethods.js

@@ -384,6 +384,17 @@ class RESTMethods {
     });
   }
 
+  banGuildMember(member, deleteDays) {
+    return new Promise((resolve, reject) => {
+      const data = {
+        'delete-message-days': deleteDays,
+      };
+      this.rest.makeRequest('put', `${Constants.Endpoints.guildBans(member.guild.id)}/${member.id}`, true, data)
+        .then(() => resolve(member))
+        .catch(reject);
+    });
+  }
+
   updateGuildRole(role, _data) {
     return new Promise((resolve, reject) => {
       /*

src/structures/GuildMember.js

@@ -202,6 +202,19 @@ class GuildMember {
     return this.client.rest.methods.kickGuildMember(this.guild, this);
   }
 
+  /**
+   * Ban this Guild Member
+   * @param {number} [deleteDays=0] The amount of days worth of messages from this member that should
+   * also be deleted. Between `0` and `7`.
+   * @returns {Promise<GuildMember, Error>}
+   * @example
+   * // ban a guild member
+   * guildMember.ban(7);
+   */
+  ban(deleteDays = 0) {
+    return this.client.rest.methods.banGuildMember(this, deleteDays);
+  }
+
   sendMessage() {
     return;
   }