def post_vrule(path = nil, params = {})
      client(path).post_vrule(service_name(path), section_name(path), graph_name(path), params)
    end
def post_vrule(path = nil, params = {})
      client(path).post_vrule(service_name(path), section_name(path), graph_name(path), params)
    end
Post parameters to a graph, POST /vrules/api/:path
 @param [String] path
 @param [Hash] params The POST parameters. See #get_graph
 @return [Hash] the vrule property
 @example
{"error"=>0,
"data"=>{
  "graph_path"=>"/hoge/hoge/hoge",
  "color"=>"#FF0000",
  "time"=>1395826210,
  "id"=>1,
  "dashes"=>"2,10",
  "description"=>""}}