commit 1
commit 2
del file
Revert c2da6da..372012e

This rolls back to commit c2da6dab13e3a43a600d8507321b80a9adb39c36.
Revert 372012e..24b2c28

This rolls back to commit 372012e19d4f6052cc0858427cf7b2e5c6b01f35.
add gitignore
update git ignore