Quick bug fix for brew installs

Major updates to code base to improve bugs in task management.
Changed note separator to improve readability. Will need to manually update your notes.md

• Added MathJax markdown rendering support. See README for example.

• Quick bug fix that was introduced with v0.2.2 on folder argument

• Bug fixes
• Startup argument support to initiate against any passed folder location

Bug Fix: Shutdown on Mac intermittent malfunction
Theme Update: Increase brightness of text on dark theme
Feature: Enabled a few more markdown features (Tables, Strikethrough, Inline Code)

Primarily bug fixes around markdown code and checkbox interruption

Fixed shutdown bug

Added ability to shutdown app from web front-end