Release 1.0.1

##Changes
-Default threshold set to 0
-Add option to setup how to display errors:

constructor([{...} [, errorSettings = Object] ]]])

• errorSettings <[Object]> change how to display errors (errorType: flat | movement | flatDifferenceIntensity | movementDifferenceIntensity | diffOnly):

{
  errorColor: {
    red: 255,
    green: 0,
    blue: 255
  },
  errorType: 'flat',
  transparency: 0.7
}