How can I configure my init.el download packages that are not in (M)Elpa and install them automatically (if not already installed)?
Something like doing it with wget or with git (as you do in vim) and then install them:
wget http://www.web.com/script.el git clone https://github.com/user/package.git
And then install it with
M-x package-install-file. Or something like that.
I don't know anything about lisp and I would like to do that from my init.el