Remove prebuilt binaries

[linted]

Hey! I love this idea, it sounds like it will break up the monotony of a long work day, as well as rewarding new developers for committing often.

The only problem I have with it is that there are two prebuilt binaries in this repository. From a security and portability perspective, it will be more widely accepted and useable if the installation either downloaded the neutralino binaries from a trusted source, or built them using the official source repository.

[shalithasuranga]

Hey.. Thanks.. First I tried to draw image in console. (But image is no so fine with large pixels), Then possibilities were nw.js, electron and neutralino. Yeah agree. We can download binaries with npm post install maybe