Update primus path for examples/echo/connect.js

Btw, it seems http://primus-example.nodejitsu.com isn't up, maybe you could re-deploy it or something?
Merge pull request #208 from alessioalex/master

Update primus path for examples/echo/connect.js
[fix] Added missing pathname argh
[doc] Clarify the restrictions of the URL
[doc] Clarify that disconnect is correcty transformed to lowercase.
[doc] Clarify the `close` event.
[doc] Added missing events for server and spark
[minor] Default to engine.io
[fix] Work around a Safari 5.1.7 bug on windows
[doc] Clarify that you should add your plugins before creating or referencing the Socket
[dist] 2.1.3
[patch] Patch Engine.IO as it incorrectly forces XHR poling when it's not supported

This because new Function() will always return an empty object. (unless you return a custom your self during the construction)
[dist] 2.1.4
[minor] Added querystringify method so we can transform parsed querystrings to strings
[fix] Remove primus 1.4 compatiblity code
[fix] Force a cache busting URL for each new connection to combat bfcache.
[fix] Use latest sockjs-client-node -- fixes authorization issues @ integration
[fix] Added no-cache middleware which forces no-cache headers for HTTP requests
[minor] Return `true` when a sync middleware answers the request
Merge pull request #213 from lpinca/fix/middleware-return-value

Return `true` when a sync middleware answers the request
[fix] null objects and remove listeners only after we have emit the close event, fixes #214 for the timeout case
[minor] Add deprecation warning for sync middlewares returning `false`