title: Leaflet - How to match marker and polyline on drag and drop
body: <p>I have a project with leafletJS.
  For example, I have 2 points (A, B) in map. I display it as 2 Markers
  I must draw a polyline from A to B.
  I moved marker A and I want to the head of polyline of marker A match to marker A (moved follow marker A).
  How can I do this?
  Sorry for my bad English.
  Thanks all very much.</p>
  
  <p>Truong M.</p>