Bump to v3.4.0.

math/add.js

@@ -0,0 +1,19 @@
+/**
+ * Adds two numbers.
+ *
+ * @static
+ * @memberOf _
+ * @category Math
+ * @param {number} augend The first number to add.
+ * @param {number} addend The second number to add.
+ * @returns {number} Returns the sum.
+ * @example
+ *
+ * _.add(6, 4);
+ * // => 10
+ */
+function add(augend, addend) {
+  return augend + addend;
+}
+
+module.exports = add;