title: Easiest way to "draw" simple lines over an image with jQuery and save to Rails DB?
body: <p>I'd like to draw lines on an image. Basically allow the user to draw a path for mountain trails they like.</p>
  
  <p>1) Does anyone know a good simple library for drawing basic lines?</p>
  
  <p>2) After a user draws a bunch of lines on an image, what would be the best way to save the data to the database?</p>