Update Installation Documentation

[justindhillon]

I updated the bash commands in the installation documentation in the root README.md file. I changed "nvm use" to "nvm update". The command "nvm use" only works if the correct node version is already installed. The command "nvm install" does the same thing, but also installs the correct node version if it isn't already installed.

[kewbish]

Thanks for pointing this out! Do you have a link to documentation that indicates that nvm install will switch Node versions (as with nvm use if the version in .nvmrc is already installed? I can't find any references.

[justindhillon]

Here is the documentation on nvm install.

https://github.com/nvm-sh/nvm#nvmrc

[kewbish]

Ah, I see that nvm install will install the version specified in .nvmrc ­— where does it say it will implicitly switch to that version if it's already installed?

(I ask because I personally don't use nvm, so I can't test myself!)

[justindhillon]

I am updating the nvm documentation to avoid the confusion in the future. You can see that pull request here

In the meantime, here is a youtube video demonstrating what nvm install does in the presence of an .nvmrc file. At first I try nmv install with a version already installed, and then one that isn't already installed. In both cases, the node version is switched automatically.

https://youtu.be/N3ylqjeNTMA

[kewbish]

Got it, thank you for clarifying!