Update README.en.md

Update README.md

Merge pull request #34 from nickming/dev-nickming

Support clear listeners

Inherit RecyclerView

Remove the effect of swipeFlags on touch on menus.

Support RTL

Update README

Fix desinger onInit method rightMenu param always null

Add demo to show how to open the menu with long press.

Fix auto close when open menu manually

Upgrade kotlin and gradle

Update README

Merge pull request #18 from aitsuki/fix-17

Fix #17