In earlier days, if you wanted to install some plugins, you had to download a file and place it typically in your ~/.vim/plugins directory. Today there is a kind of package manager, called Pathogen.vim. This tool or plugin makes it easy to install plugins in a private directory.
Elixir, the language of the future? For me it looks a promising language. I do like the programming language erlang and python, but I assume that elixir can be handy for testing purposes too. The concepts look like erlang according to me. Lets have a first overview of assignments.