Adding binaries for easier intergration in projects

[StamKaly]

I was developing an application in Python, and I needed to use srt-to-vtt, I installed it and it worked just fine. The problem was that distributing my app was impossible, as the users would have to install node, npm and srt-to-vtt separately. So I packaged bin.js into executables for all major platforms, and used them instead. Could you add them to your 1.1.1 release, to help any others that might need this? I have uploaded them in that release inside my fork. Thanks!