[Suggestion]Change install script to latest instead of specified version

[imcoddy]

Hi

I think it would be better to add a latest tag for the install script, for example, now the script is

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash

could change to

curl -o- https://raw.githubusercontent.com/creationix/nvm/latest/install.sh | bash

So whenever there is a version update, user don't need to change their command to install on new machine :)

[ljharb]

This is intentional; you should know exactly which version you’re installing.

Duplicate of #1898. Duplicate of #1017. Related to #400.