Added actionview in API generation [ci skip]

CHANGELOG and LICENSE removed as suggested
memorized -> memoized typo fix [ci skip]

Reverts one line from 457b7ff9
Merge pull request #11431 from ianfleeton/initialization_memoized_typo

memorized -> memoized typo fix [ci skip]
Merge pull request #11425 from arunagw/actionview_api_generation

Actionview api generation
Removed unused broken task for update README [ci skip]
Removed unused require from Rakefile
Merge pull request #11433 from arunagw/removed_unused_task

railties Rakefile tweaks