title: Difference between `go get` and `git clone`?
body: <p>I had a problem with <code>go-modbus</code> in an <a href="https://github.com/goburrow/modbus/issues/30" rel="noreferrer">issue</a> in Github.<br>
  Author suggested me to use:   </p>
  
  <pre><code>$ go get github.com/goburrow/modbus  
  </code></pre>
  
  <p><strong>instead of</strong>      </p>
  
  <pre><code>$ git clone https://github.com/goburrow/modbus.git
  </code></pre>
  
  <p>What is the difference between that two commands?</p>