[feat]: add more package managers inside the installation section

[Bishops-exe]

Currently the npm package manager is the only command there. But as other package managers have also become popular it makes the most sense to add an installation command, so that users, who are using a different package manager, can install it by just copying the command

[jakebailey]

I do not think it's worth churning 9000 readmes just to list a few more package managers