How to Add Json MIME type in IIS 7.5

Today .NET Web Development and Tools group at Microsoft released Customer Tech Preview (CTP2) release of Visual Studio 2013 Update 2 contains a new JSON editor. "New JSON editor features in Visual Studio 2013 Update 2 CTP2"

So I Installed CTP2 updated for my visual studio 2013 to see how JSON template works and all.

{
   "Person":[
      {
         "FirstName":"Raju",
         "LastName":"Melveetilpurayil",
         "Languages":[
            {
               "id":"1",
               "name":"C#"
            },
            {
               "id":"2",
               "name":"Javascript"
            },
            {
               "id":"3",
               "name":"C++"
            }
         ]
      }
   ]
}

It was ok. but when I tried to read my json file from browser (localhost url)  I am started getting some some errors, I knew I got one exception because last day I got my laptop after repair, everything is new and ready for first run, I do not installed IIS on  my machine.

This was the exception 
HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.  Installed IIS 7.5 and Added MIME type for JSON, default there is no JOSN type in IIS 7.5

How To Add MIME Type In IIS 7.5

1: Open IIS  Manager [ in RUN  type inetmgr] press Enter

2: Click on MIME Types

3: Right click and Select Add

DONE, You added MIME type for JSON in IIS.

I ran my JSON file again and still got some other exceptions.  I started goggling, finally I found Solution that we need to give to run JSON
To allow the IIS to serve JSON files, your need to add some configuration in web.config:

<system.webServer>
      <staticContent>
        <mimeMap fileExtension=".json" mimeType="application/json" />
      </staticContent>
</system.webServer>