title: How to start with ngx-graph for Angular 7
body: <p>I am trying to use ngx-graph for Angular 7 to create a network diagram. But since the documentation is not very good and the demo is too much for a beginner I would appreciate any help of how to begin with ngx-graph. Maybe with a small example with 2 nodes and 1 link between them.</p>
  
  <p>I hope somebody can help me.</p>
  
  <p>Thank you :)</p>