Updated gitignore, files, Project.toml, doctests (#4)

* Updated gitignore, files, Project.toml, doctests

* remove Manifest.toml

* Update doctest folder to tempdir().

* Update test_files_path to tempdir()

* Update to runtest.jl

* Update runtests.jl and fixed bug in docstrings.

* Replace testing_files_path with tempdir() to fix docs build

* Change file path for data files.

* Fix docstring

* Update docstrings

* Set makedocs clean to false

* Moved setup code into doctests.

* Tweaks to README and index.md

.gitignore

@@ -0,0 +1,3 @@
+/Manifest.toml
+/.vscode
+/testing_files/