Fix npm global install

fix-npm.sh

# This script is the **correct** way to allow installation and use
# of npm executables without sudo.

# Declare where you want your global packages installed to.
npm config set prefix '~/.local/share/npm'

# Ensure the directory exists.
mkdir -p ~/.local/share/npm

# Change `.zshrc` to `.bashrc` if appropriate, but consider instead
# switching to zsh.
SHELL_PROFILE=~/.zshrc

# Make sure the executables folder is in your $PATH.
echo 'export PATH="$HOME/.local/share/npm/bin:$PATH"' >> $SHELL_PROFILE

# Make sure global node modules can find their dependencies correctly (think `yo`)
echo 'export NODE_PATH="$NODE_PATH:$HOME/.local/share/npm/lib/node_modules"' >> $SHELL_PROFILE

# Make the changes take effect.
source $SHELL_PROFILE

# Now you'll have to reinstall all global modules so your user has control.
# Here's my general set of defaults; I may be forgetting some.
npm i -g npm yo gulp webpack n