Update prepare.md to include "sudo" for "npm -g" which always requires admin on osx.
I'm guessing every time someone copy and pastes this, hits enter, then realises they have to re-run the command with sudo.
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Update prepare.md to include "sudo" for "npm -g" which always requires admin on osx.
I'm guessing every time someone copy and pastes this, hits enter, then realises they have to re-run the command with sudo.