image size update in readme

update in readme

added screenshots

Merge branch 'master' of https://github.com/apsingh03/ExpenseTrackerApp

bug update in dashboard

Update in share data url Btn

Update Dashboard.js

Update ExpenseController.js

bug update in getExpense controller

bug update in getExpensesByDates

Update README.md

added api documentation with swagger

bottom tabs connected with backend

bottom tabs update

implemented backend with redux toolkit