Adjust instructions for nvm workaround

[kylemh]

I scoured a lot of GitHub issues and Stack Overflow problems. The difficulty in just using:

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"

is that - by default - nvm.sh will run the default Node version which isn't necessarily the project's node version. This still won't save anybody manually bouncing between Node versions within different projects, but .nvmrc is a very common practice and this should assuage people who run Husky in a project using an .nvmrc file that differs from their NVM default.

[typicode]

Thanks for the PR. Out of curiosity, what's the output if you run nvm use in a directory with no .nvmrc?

[kylemh]

It errors, which is why I only run nvm use if the file exists.