Add additional commands if install target is macOS (#18)

[heyitsols]

Checks if the install target is macOS and changes behaviour based on that

[Noammac]

You should change

sudo mv ls_colors_generator.py /usr/bin/ls_colors_generator

to

sudo mv ls_colors_generator.py $install_location/ls_colors_generator

In MacOS even the root user doesn't have access to /usr/bin

[Noammac]

NOTE: this PR closes both #4 and #18, and is a more dynamic version of #13

[heyitsols]

@Noammac good spot, I have just amended the install script in line with that

[heyitsols]

Actually made this a little cleaner by removing each individual download method and replacing with either curl -o or wget -O depending on platform

[Noammac]

You (accidentally, I hope) deleted ls.c

[heyitsols]

Not deleted, just empty. Not sure how it happened but I was testing the install script in that directory rather than a scratch directory. Can't reproduce it happening again though so maybe it's from cancelling the script halfway through.

Should all be back to normal now :)

[nicklanng]

Is there any more progress on OS X support?

[heyitsols]

@nicklanng looks like progress has stalled on this repo, feel free to clone my fork which has this fix in its master branch

https://github.com/muggahtee/even-better-ls