Middleware that exposes metric for logging in the context of a user
npm install connect-metricconnect-metric 
==============
Middleware that exposes metric for logging in the context of a request
Usage
-----
``js
var app = express()
, metric = require("connect-metric");
app.use(metric());
app.get("/", function(req, res){
req.metric("home_page", 1, "views"); // measure=home_page val=1 units=views
});
`
Options
-------
`js`
metric(context, options);
The metric logger can inherit context
`js
app.use(metric({foo: "bar"}));
app.get("/", function(req, res){
req.metric("home_page", 1, "views"); // foo=bar measure=home_page val=1 units=views
});
``
#### options.request_id
Header name that provides a request id.