New : Added composer.json

[vikas-srivastava]

Added composer.json file which will help this module for submission on proposed extension.silverstripe.org website. Please add more fields according to requirements.

For more information please visit at http://extension.openbees.org/instructions/

Todo :

1 - You need to add "extra" field for snapshot, like

{
    ......... 
    "extra":
    {
        "snapshot" : "http://example.com/example.jpg"
    }
}

This will help us to showcase your module in "New Module" section.