add quick start guide (Markdown edition)
add quick start guide (Markdown edition)

mochajs/mocha,hoverduck/mocha,boneskull/mocha,igwejk/mocha,adamgruber/mocha,boneskull/mocha,mochajs/mocha,mochajs/mocha,hoverduck/mocha,boneskull/mocha,igwejk/mocha,outsideris/mocha,outsideris/mocha,adamgruber/mocha,adamgruber/mocha,hoverduck/mocha,hoverduck/mocha