Make install script install all required components

[wzeth]

@majestrate, would you be opposed to additions to the install script that installed all dependencies? Something that would be very useful to me (and probably others) would be a script that automated the installation of golang and redis (as well as configuration for nntpchan within the sh script itself). Assuming the additions to install.sh met your requirements, would this be a pull request you'd accept?

[majestrate]

ideally it should be renamed to fit what it's doing, installing all dependancies, maybe call it deps.sh

[majestrate]

i moved the build system to use makefiles recently, not sure how we'd do this now that that is done.