Revert "Initial "

This reverts commit 3552bf7e4b6e9e0302f7d29891cc8fc97d5453e4.
Revert "Initial"

This reverts commit 0b71146a95dbba3c8a49823665e2d72ca69486f3.
Merge branch 'master' of https://github.com/an310/calculator.git