Improves build instructions

[b-kaiser]

Attempts to improve the build instructions for users that have no experienced with zig, i.e. attempts to close #34. However, I have no experience with zig, either, so please feel free to only use this as a suggestion for your own fix or require further improvements before merging.

[andrewrk]

Thank you for your suggestion, but I prefer status quo. I think it is better for people to go through the same process you did to learn this information, and perhaps make different conclusions than you did.

[b-kaiser]

Dear @andrewrk,
your welcome.

May I ask you whether there is a specific different conclusion to make that I should have been aware of?

[Atomk]

@b-kaiser After watching this talk I suspect Andrew wants users to find out that downloading a binary directly from the official website/repo is better than relying on the system package manager, or maybe that the first thing to do when approaching a new build system (Zig) is reading the docs, but I may have missed something here.

I kinda agree that a note about ZIg moving fast (like this) may help clarify build issues.