TrajsBuild *doesn't* have the option of not smoothing trajectories

[andburch]

The function is described as: Reads multiple trajectories from files, performs some basic sanity checks on them, and optionally smooths and scales them. Attempts to collect and report errors for multiple trajectories in a single call.
However, although smoothP = 3, smoothN = 41, are changeable smoothing parameters, you can't actually set these to zero or give TrajsBuild() the command to NOT apply smoothing.

[JimMcL]

Specify smoothP = NA, smoothN to apply no smoothing. I have updated the documentation to mention this.