adjust whitespace of notes code to match rest of project

lib/slidenotes/index.js

@@ -32,7 +32,7 @@ app.get("/", function(req, res) {
 
 app.get("/_notes/:socketId", function(req, res) {
 
-  fs.readFile(opts.baseDir + 'slidenotes/notes.html', function(err, data) {
+	fs.readFile(opts.baseDir + 'lib/slidenotes/notes.html', function(err, data) {
 		res.send(Mustache.to_html(data.toString(), {
 			socketId : req.params.socketId
 		}));