Fix #1992 Add method Phalcon\Forms\Form::appendMessage
Updated FormsTest.php
Merge pull request #2173 from dreamsxin/nfr_1992

Fixed #1992 Add method Phalcon\Forms\Form::appendMessage
Add \Phalcon\Amf::encode and decode
Updated AMF3
Add serializer
Finsh amf deserializer
Finsh amf deserializer
Finsh \Phalcon\Amf\Serializer
Only support AMF3
Optimize
Remove unused variable
Merge pull request #118 from dreamsxin/amf3

Add \Phalcon\Mvc\Amf