docs: add to readme instructions on how to connect to phantomjs and atom-shell #28
Description
atom-shell: same as chrome ( --remote-debugging-port )
phantomjs: --remote-debugging-port=9225 -w ws://localhost:9222/devtools/page/1 ( see https://groups.google.com/d/msg/google-chrome-developer-tools/Xk3nH0hJ2fg/ukr0UsRGAAAJ )