RFC: Add basic console as proof of concept

[brentvatne]

If you're using the cli frequently, you have to deal with the boot up time of the interpreter, loading of libraries etc that adds a good 1.5s to each command, at least on my machine. So I thought it might be useful to have a console command that will just allow us to maintain a rdio-cli session open and skip that boot time.

For example, without console:

$ time rdio help
-- output --
rdio help  1.45s user 0.13s system 99% cpu 1.581 total

$ time rdio current
-- output --
rdio current  1.75s user 0.22s system 85% cpu 2.290 total

With console:

$ rdio c
> help
-- output --
0.010000   0.010000   0.020000 (  0.015161)
> current
-- output --
0.000000   0.010000   0.420000 (  0.766850)

Benchmarking code left in so you can give it a try yourself.

[brentvatne]

No interest in this @pengwynn? :santa:

[pengwynn]

Very cool! Somehow I wasn't watching my own repo, thanks for pinging me. :grinning:

[brentvatne]

Haha thanks @pengwynn - we should probably remove the benchmarking code from there now though ;) I'll do that for you.

[pengwynn]

Ha, I read right over that in the diff. I thought it was just in the example. Thanks.

[brentvatne]

@pengwynn

Removed benchmarking here: https://github.com/pengwynn/rdio-cli/commit/771b06afd2997dabbcf5098cf1b6ae160b43d62e

Also c was a pre-existing shortcut for current, so I just made the console open with rdio console for now: https://github.com/pengwynn/rdio-cli/commit/7067967e22fee9baab4cf5775b49d1794305f92c