Added module DisplacementBehaviour.jl

[EmilSoleymani]

Added DisplacementBehaviour module. As always, to test add the following lines to the body of the vdisp.jl file and execute julia vdisp.jl:

INPUT_DATA_PATH = "../src/.data/input_data.dat"
OUTPUT_DATA_PATH = "../src/.data/output_data.dat"
readInputFile(INPUT_DATA_PATH, OUTPUT_DATA_PATH)

The output file should look like this after running:

Title: Footing IN Granular Soil - Schmertmann
Nodal Points: 17, Base Nodal Point Index: 7
Number of different soil layers: 2
Increment depth(dx): 0.5
Model: CollapsibleSoil
Foundation type: RectangularSlab
Displacements at Each Depth Output

[smiths]

"In order to" should be replaced by "to". I mention this so that you can get out of the habit of using it. 😄 Other low information content phrases can be found in the link given in my writing checklist.

[smiths]

I'm not sure of the value of using hidden folders to store your test cases?

[smiths]

Try to keep the pull requests focused on one thing. For instance, in the future, the changes to the VnV plan would be better as a separate PR.

What are the instructions for running test cases in julia? I would rather test PRs using the created test cases than the current approach of making temporary changes to vdisp.jl.

The current PR looks good, so I'll accept it. I won't delete the branch though, in case you want to use it to fix the "in order to" issue.

[EmilSoleymani]

In order to run the test cases:

1. Make sure you are in master directory vdisp/
2. Execute julia in terminal. The Julia terminal should now come up (with my theme, things are now green).
3. Type ] to enter Julia's Pkg REPL (with my theme, things are now blue).
4. Execute activate .
5. Execute add Test. You should see quite a few dependencies get installed.
6. Execute test. You should now see the tests running.

Hit backspace to exit from Pkg REPL to Julia terminal. Use Ctrl+D or exit() to exit Julia terminal

[smiths]

The instructions are great. Works fine. I suggest that we create a make file with those instructions and a rule make test. If you don't have time to do it right now, please create an issue.