Accept generate() when called without the options parameter (#14)

When options is not provided, defaults are used. This allows calling
generate() and generateMultiple() without having to provide an empty
options object when defaults are wanted.

README.md

@@ -12,7 +12,7 @@ $ npm install generate-password --save
 
 ## Usage
 
-#### `generate(options)`
+#### `generate([options])`
 
 Generate one password with the given options. Returns a string.
 
@@ -28,7 +28,7 @@ var password = generator.generate({
 console.log(password);
 ```
 
-#### `generateMultiple(amount, options)`
+#### `generateMultiple(amount[, options])`
 
 Bulk generate multiple passwords at once, with the same options for all. Returns an array.
 

src/generate.js

@@ -54,6 +54,7 @@ var generate = function(options, pool) {
 // Generate a random password.
 self.generate = function(options) {
 	// Set defaults.
+	options = options || {};
 	if (!options.hasOwnProperty('length')) options.length = 10;
 	if (!options.hasOwnProperty('numbers')) options.numbers = false;
 	if (!options.hasOwnProperty('symbols')) options.symbols = false;

test/generator.js

@@ -6,6 +6,11 @@ var generator = process.env.JSCOV ? require('../src-cov/generate') : require('..
 
 describe('generate-password', function() {
 	describe('generate()', function() {
+		it('should accept to be called without the options parameter', function() {
+			assert.doesNotThrow(function () {
+				generator.generate();
+			});
+		});
 		it('should give password of correct length', function() {
 			var length = 12;
 
@@ -87,11 +92,16 @@ describe('generate-password', function() {
 	});
 
 	describe('generateMultiple()', function() {
+		it('should accept to be called without the options parameter', function() {
+			assert.doesNotThrow(function () {
+				generator.generateMultiple(1);
+			});
+		});
 		// should give right amount
 		it('should give right amount of passwords', function() {
 			var amount = 34;
 
-			var passwords = generator.generateMultiple(amount, {});
+			var passwords = generator.generateMultiple(amount);
 
 			assert.equal(passwords.length, amount);
 		});