chore: update readme, add plugin install instructions

update es to 2.4.6

update es to 2.4.5

fix plugin version

update es to 2.4.3

update es to 2.4.2

update es to 5.0.0-rc1

update es to 2.4.1

update to support es5.0.0-beta1

update es to 2.4.0