/*********************************************************/ express4+angularjs+mongodb project instruction

//----------------directory and file instruction----------------

mongo_dao:mongodb data access

mongo_model:mongodb object

common:common js for server

service:method for server

access.log:log file

server.js:config for express application

angular_web:web application of angularjs

//---------------------framework instruction-----------------

mongoose:a mongodb framework to make db access simplely

bower:a tool to install and manage js framework automatically

log4j:a log framework to write log what we want

async:a code framework to format code of nodejs

//------------------specific instruction-----------------

use restful api to call methods of server use asnyc to format codes of server