Add command line options

[mwhit74]

add argparse options:
blank: user defined spacing, axles, trailing load, and span lengths
-c --cooper: automatically adds cooper axles/loads
-al --alternate: automatically adds alt axles
-ar --aream: runs both cooper and alt
-bl --batch len: batch lengths
-ba --batch axle: batch axle configs
-h --help: display options and description each

[mwhit74]

Should a command line option approach as outlined above be used or a text file based input be used.

The text file based input would be an excellent experimental ground to develop an interpreter module for the front end. Not sure if it would be all that conducive to quickly using the software. Command line options would probably be the fastest if one is familiar with the commands.

I have also given thought to a GUI option. The inputs are so basic it would be fairly straight forward to offer a simple GUI interface to an actual user, not a developer user.

[mwhit74]

I think a text file based input option should be used.

Something like the following:
title
#of axle configurations
axle spacing separated by commas
axle weights separated by commas
spacing to trailing load
distributed trailing load
#of span configurations
span length 1, span length 2
echo or file

title - name of run
echo - echo output to screen
file - write output to file (output file will be input file path plus title)

It's such a simple input file there is no reason to complicate it other than for fun. However I want something that works and then I can work on making it more user friendly (i.e. complicating it)

[mwhit74]

The code to run multiple axle configurations and multiple span configurations is experimentally implemented in the dev_test file in the test directory.