In this commit `Kernel#p` is a proxy for `Opal.puts()`, and  `Opal.puts()` is just a proxy for `console.log()` (or `print()` in v8 and spidermonkey).

In browser, `console.log()` renders its arguments with inspection, so it could be cool to preserve this feature. And AFAIK, `Kernel#p` is the `console.log()` in Ruby world :)