Homebrew installation

[emlazzarin]

To maximize distribution, it would be ideal to be able to install via Homebrew and similar, as opposed to compiling locally.

[MrMarble]

Thanks for your suggestion! I'll look into Hombrew docs to see how to add my application.

In the meantime, in the releases there are compiled binaries for linux and Mac OS ready to download without the need of compiling.

I will clarify the installation progress in the README, this project was more popular than I expected.

[MrMarble]

Reading the Homebrew documentation I have seen this line in the self-submitted section, which I believe represents termsvg:

We frown on authors submitting their own work unless it is very popular.

So I'm going to refrain from opening a PR to homebrew to integrate termsvg for now, as I don't consider it to be popular enough, if someone wants to do it for me, it would bypass the rule 😎

I have added installation instructions in the README and created an installation script to download and install the binary for your system, which simplifies the process.