Fix the code styling and add error handling.

index.js

@@ -148,11 +148,12 @@ Collection.prototype.group = function(group, callback) {
 };
 
 Collection.prototype.remove = function() {
-	var thiz = this;
+	var self = this;
 	if (arguments[1] == true) { // the justOne parameter
 		var args = arguments;
-		this.find(arguments[0], function(err, docs) {
-			thiz._apply(DRIVER_COLLECTION_PROTO.remove,[docs[0], getCallback(args)]);
+		this.findOne(arguments[0], function(err, doc) {
+			if (err) return getCallback(args)(err);
+			self._apply(DRIVER_COLLECTION_PROTO.remove,[doc, getCallback(args)]);
 		});
 	} else {
 		this._apply(DRIVER_COLLECTION_PROTO.remove, arguments.length === 0 ? [{}, noop] : ensureCallback(arguments));