Update Documentation
On branch master, changes to be committed:
	modified:   README.md
Implement action to add a note to a notebook.
On branch master, changes to be committed:
	modified:   mainwindow.py
	modified:   session.json (for whatever reason)
Clean up code by removing unnecessary semicolons (stupid semicolons!).
On branch master, changes to be committed:
	modified:   mainwindow.py
	modified:   session.json
Add documentation for Quark configs.
On branch master, changes to be committed:
	new file:   Quark_Documentation/Configuration.md
Spell check documentation.
On branch master, changes to be committed:
	modified:   Quark_Documentation/Configuration.md
Fix bug with creation of Quark notes directory.
On branch master, changes to be committed:
	modified:   config.json
	modified:   quarknotemanagermodel.py
Set the tab width for the note editor
On branch master, changes to be committed:
	modified:   noteeditor.py
Edit copyright notice.
On branch master, changes to be committed:
	modified:   quark.py