docs(instructions): add deprecation notice
docs(instructions): add deprecation notice

1. I strongly suggest you to move to `log-update` (on npm) – The switch
should be really easy
2. PhantomJS 2.1 has finally came out, solving the issues I was trying
to workaround with this module when I first wrote it

rafaelrinaldi/log-output,rafaelrinaldi/write.js