'Update Available' in 'installed plugins' list don't show update for new ve

Social Space is my plugin. I’ve put the v1.0 in my localhost. I’ve just released the v2.0 of my plugin and its available for download in wp plugin directory. But I do not see any upgrade notifications in my localhost about the v2.0

Here is the link to repository of plugin if any need be.

Can anyone please tell me where am I going wrong for this. Thanks a lot.