Merge pull request #1 from demns/master

Change calculator.html, script.js
Merge pull request #2 from demns/master

Added readme
New function for addition

function add one number to another
New function for addition

function add one number to another
Merge pull request #3 from YRK-93/master

New function for addition
Revert "New function for addition"

This reverts commit a9720f44b4d754b9039d0f81a502a703e5b35962.
Revert "Revert "New function for addition""

This reverts commit fa4f46a71d848aa6ee4b71c1e76075fa514258a7.
Merge pull request #1 from MrMarDok/master

Update