docs: update example in README

[nfischer]

If you have any formatting issues with the example in the README, or want the example changed, feel free to modify as you see fit.

I haven't tested this example, but I'm pretty sure it's correct. Feel free to test it out.

[levithomason]

Looks good, I'll test it soon as I can. While we're at cleanup, would you mind aligning the comments as well? I think it helps with scanning readability.

$ shx pwd                        # ShellJS commands are supported automatically
/home/username/path/to/dir

$ shx ls                         # files are outputted one per line
file.txt
file2.txt

$ shx rm *.txt                   # a cross-platform way to delete files!

$ shx ls

$ shx echo "Hi there!"
Hi there!

$ shx touch helloworld.txt

$ shx cp helloworld.txt foobar.txt

$ shx mkdir sub

$ shx ls
foobar.txt
helloworld.txt
sub

$ shx rm -r sub                  # options work as well

[nfischer]

Good suggestion, will do

[nfischer]

@levithomason Updated with your suggestion

[levithomason]

Haven't tested but it looks like it should work as described. LGTM

[nfischer]

Alright, I'll merge this in. If there's any issues, we can revise that in another PR.

[ariporad]

Shoudl we delete this too?

[nfischer]

I left it to demonstrate that files are deleted, as expected.

[ariporad]

Ok. You might want to add a comment describing that.