Plugin not found: ["git://github.com/elevation/event_calendar.git"]

[mukundp]

Hello,
I am trying to install the Event Calendar plugin in my already created rails application. I am using the readme file given on link "https://github.com/elevation/event_calendar#readme".

But while executing the command  : $ ruby  script/plugin install git://github.com/elevation/event_calendar.git , i am getting the above error  meassage  : Plugin not found: ["git://github.com/elevation/event_calendar.git"]

I have installed rails 2.0.2 & ruby 1.8.6. on my windows 7 machine.

Please, can anyone tell me what is the problem? Either i am missing something in it or is the problem comming from github server?
Any help would be appiciate....!!