new features

[redguardtoo]

features:

• es6, babel
• import, can scan files in certain root directory
• 3rd party library
• auto-complete (company, ivy?)
• can read webpack.config.js

plan:

• start from moment.js

[redguardtoo]

check nodejs-repl

• focus on nodejs only
• clear the namespace of original api (provides alias)
• auto-complete (either use company-mode or use our own complete)
• support babel (babel and corejs), .babelrc
• like press C-x C-e to execute the expression.