Draft Snap Endpoint

Description
This snap mode lets you select the endpoints of elements.

How to use

 * 1) Make sure snap mode is turned on
 * 2) Choose element to be inserted into the FreeCAD-document
 * 3) Move cursor near one of the endpoints you wish to attach your element to
 * 4) Below on the right side of the cursor the symbol of the snap mode will appear
 * 5) Click to attach your element to the selected endpoint of target element