REST Client Example in Ruby

Can anyone explain me with an example, by using REST Client to do GET/POST/PUT operations in a Rest web service?

In POST/PUT, using REST Client, need to pass the whole xml body to do POST/PUT operations.

For example, Using REST Client

I need to get the content of a service using,

      RESTClient.get(url)

POST an xml to an url:

      RESTClient.post(url,entirexml)

PUT an xml to an URL:

      RESTClient.put(url,entirexml)

DELETE using REST CLIENT.

Can anyone help me with examples for all the REST Client HTTP METHODS with example?

I need to send the whole XML along with namespace to a rest service using PUT/POST operations of REST Client.

If anyone have examples on this, kindly post then please.