.isValid() is more convenient than .validate()

lib/address.js

@@ -10,10 +10,9 @@ function Address(obj) {
     this.set(obj);
 };
 
-Address.validate = function(addrstr) {
+Address.isValid = function(addrstr) {
   var address = new Address().fromString(addrstr);
-  address.validate();
-  return this;
+  return address.isValid();
 };
 
 Address.prototype.set = function(obj) {

test/test.address.js

@@ -12,10 +12,10 @@ describe('Address', function() {
     should.exist(address);
   });
 
-  describe('@validate', function() {
+  describe('@isValid', function() {
 
     it('should validate this valid address string', function() {
-      should.exist(Address.validate(str))
+      Address.isValid(str).should.equal(true);
     });
 
   });