add node modules to repo

app/node_modules/speedometer/README.md

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+# speedometer
+
+Speed measurement in Javascript
+
+```
+npm install speedometer
+```
+
+## Usage
+
+``` js
+var speedometer = require('speedometer')
+var fs = require('fs')
+
+// Let's measure how fast we can read from /dev/urandom
+var speed = speedometer()
+var stream = fs.createReadStream('/dev/urandom')
+
+stream.on('data', function(data) {
+  // Simply call speed with the amount of bytes transferred
+  var bytesPerSecond = speed(data.length)
+
+  console.log(bytesPerSecond+' bytes/second')
+})
+```
+
+You can always get the current speed by calling `speed()`.
+
+Per default `speedometer` uses a 5 second buffer.
+To change this simply pass another value to the constructor
+
+``` js
+var speed = speedometer(20) // uses a 20s buffer instead
+```
+
+## License
+
+MIT