* Remove: remove all features in dotweb!
* Remove: remove ServerConfig().EnabledAutoCORS.
* Add: add example/README.md
* Demo for how to use ConfigSet tools?
    - first define config file named 'user-conf.xml'
    ```
    <?xml version="1.0" encoding="UTF-8"?>
    <config>
        <set key="set1" value="1" />
        <set key="set2" value="2" />
        <set key="set3" value="3" />
        <set key="set4" value="4" />
    </config>
    ```
    - include config file
    ```
    err := app.Config.IncludeConfigSet("/home/your/user-conf.xml", config.ConfigType_XML)
    ```
    - use it in your HttpContext
    ```
    value := ctx.ConfigSet().GetString("set1")
    ```
* 2019-02-02 12:00