Add --skip-welcome-message

Also update peerDeps
Save user configuration

Prompt will be asked on first use and save to
.yo-rc.json. Currently this file need to edit manually
(or remove) for new Assemble scaffold prompt.

Once the manual edit is done, just run yo assemble to
scaffold the project.
Change prompt type from list to checkbox

Allow user select multi plugin. Enable permalinks
and sitemap plugin by default.

Ref: #17