Category & Recurrence Inputs added / READMEs added

Proposed changes

Added category input and recurrence input for user to add more detail to their expenses/income. Possible calendar page which shows when expenses are due and when it is pay day.

Link to Product Tracker

This will be a link to the issue you are specifically tasked with resolving.

Link to Figma/Zeplin

n/a

Types of changes

What types of changes does your code introduce to Periodikal? Put an x in the boxes that apply

[ ] Bugfix (non-breaking change which fixes an issue)
[x] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[x] Documentation Update (if none of the other choices apply)

Checklist

_Put an x in the boxes that apply. You can also fill these out after creating the PR.

[ ] All apps build locally (npm run build:all)
[ ] Lint and unit tests pass locally with my changes
[ ] In the case of UI changes, I have locally verified no new browser console warnings were observed
[ ] I have added necessary documentation (if appropriate)
[ ] Any dependent changes have been merged and published in downstream modules

Further comments

n/a

vinson-han / expense-tracker