Update README

README.md

 
 * `apt-get update && apt-get -y install build-essential libc6-dev libssl-dev`
 
-To compile the `websockify` daemon use `make` in the `src/contrib` directory.
+To build the `websockify` daemon use `make` in the `src/contrib` directory to compile.
 
 The web interface itself uses [Plotly.js](https://plot.ly/javascript/) to display the histogram of the channels in realtime by connecting to the websocket endpoint and provides a convenient user interface for exploring the details of the gamma-spectrum.