Added adding to roles

lib/Client.js

@@ -765,6 +765,35 @@ var Client = (function () {
 		});
 	};
 
+	Client.prototype.addMemberToRole = function addMemberToRole(server, role, member) {
+		var callback = arguments.length <= 3 || arguments[3] === undefined ? function (err) {} : arguments[3];
+
+		var self = this;
+
+		return new Promise(function (resolve, reject) {
+
+			var serverId = self.resolveServerID(server);
+			var memberId = self.resolveUserID(member);
+
+			var acServer = self.getServer("id", serverId);
+			var acMember = acServer.getMember("id", memberId);
+
+			request.patch("https://discordapp.com/api/guilds/" + serverId + "/members/" + memberId).set("authorization", self.token).send({
+				roles: acMember.rawRoles.concat(role.id)
+			}).end(function (err) {
+
+				if (err) {
+					reject(err);
+					callback(err);
+				} else {
+					acMember.addRole(role);
+					resolve();
+					callback();
+				}
+			});
+		});
+	};
+
 	//def createws
 
 	Client.prototype.createws = function createws(url) {
@@ -1428,6 +1457,15 @@ var Client = (function () {
 		}
 	};
 
+	Client.prototype.resolveUserID = function resolveUserID(resource) {
+		if (resource instanceof User) {
+			// also accounts for Member
+			return resource.id;
+		} else if (!isNaN(resource) && resource.length && resource.length === 17) {
+			return resource;
+		}
+	};
+
 	Client.prototype.resolveDestination = function resolveDestination(destination) {
 		var channId = false;
 		var self = this;