neovim and plugins installation guide
how to install neovim on manjaro linux
This paper briefly show you how to install neovim on manjaro linux.
At first take your terminal through shortcut or by selecting its icon, then type in:
$ sudo pacman -S neovim
You may after have to respond to a question like:
:: Proceed with installation? [Y/n]
Of course hit "Y", also "y" works the same.
Now you have neovim installed on your machine, so to open neovim you need to launch a command which is "nvim", and not "neovim".
After being said you should be able to see your text editor opened:

At last, you have to install a module that the official site requires you to have.
So again inside your terminal type:
$ sudo pacman -S python-pynvim