Build npmrc dynamically on first run

home/.npmrc

@@ -1,3 +0,0 @@
-_auth = a2lyc2xlOjBsUUFWWHN3eGJjQURwemw=
-prefix = /home/npetherbridge/.npm-global-pkg
-email = root@kirsle.net

home/.zshrc

@@ -41,6 +41,9 @@ export WORKON_HOME=~/.virtualenvs
 export GOPATH="$HOME/go"
 
 # Node/npm
+if [[ ! -f "${HOME}/.npmrc" ]]; then
+	echo "prefix = ${HOME}/.npm-global-pkg" > $HOME/.npmrc
+fi
 export NPM_PACKAGES="${HOME}/.npm-global-pkg"
 export NODE_PATH="${NPM_PACKAGES}/lib/node_modules:${NODE_PATH}"
 export PATH="${NPM_PACKAGES}/bin:$PATH"