Add the cursor.size method

index.js

@@ -95,6 +95,10 @@ Cursor.prototype.map = function(mapfn, callback) {
 	});
 };
 
+Cursor.prototype.size = function(callback) {
+	this.count(true, callback);
+};
+
 Cursor.prototype._apply = function(fn, args) {
 	this._get(function(err, cursor) {
 		if (err) return getCallback(args)(err);

tests/test-cursor-size.js

@@ -0,0 +1,21 @@
+var assert = require('assert');
+var insert = require('./insert');
+
+insert([{
+	hello:'world1'
+},{
+	hello:'world2'
+},{
+	hello:'world3'
+},{
+	hello:'world4'
+}], function(db, done) {
+	db.a.find().skip(1).size(function(err, thesize) {
+		assert.equal(thesize, 3);
+		db.a.find().limit(2).size(function(err, theothersize) {
+			assert.equal(theothersize, 2);
+			done();
+		});
+	});
+});
+