inject /usr/local/bin in path

[MordFustang21]

Injected /usr/local/bin into path on MacOS since it's not provided by default.

I've also updated a couple of the dependencies to provide a better experience.

This should resolve issue #13

[Jorropo]

This still doesn't work for me on Linux, how ever I found how to fix it.

Start atom including :

source ~/.bashrc

I've edited my .desktop for atom and it work like a charm now. :)