Added a function to run cloud code.

#### cloudRun (functionName, data, callback)

This will send a POST request to a cloud code function with the `data` that you pass and return what your cloud code function sends back to `body`.

    var data = {
      name: 'Ross'
    };
    
    kaiseki. cloudRun('HelloWorld', data, function(err, res, body, success) {
      console.log('The cloud code function returned: ', body);
    });