Install node via nvm

* Add nvm from homebrew
* Add an inst_nvm command which will call it

This version of nvm 0.3.11 doesn't support a --no-progress
option so it spews onto the screen. An update
[here] does.

[here]: nvm-sh/nvm#1079

dev.bash

@@ -5,6 +5,8 @@ inst_brew rake-completion
 inst_brew git-sh
 inst_brew node
 inst_brew yarn
+inst_brew nvm "mkdir -p $HOME/.nvm"
+inst_nvm "9.11.1"
 inst_brew reattach-to-user-namespace
 inst_brew ssh-copy-id
 inst_brew terminal-notifier

mbpsetup.sh

@@ -12,7 +12,7 @@ function status(){
     local line='---------------------------------------------------'
     local title="$1"
     local stat="$2"
-    printf "%s %s [%s]\n" "$title" "${line:${#title}}" "$stat"
+    printf "%s %s [%s]\\n" "$title" "${line:${#title}}" "$stat"
 }
 
 # Perform an action once.
@@ -30,7 +30,7 @@ function once() {
         status "$title" "NOP"
     else
         status "$title" "START"
-        $cmd
+        eval "$cmd"
         if [[ -z "$post" ]] ; then
             $post
         fi
@@ -96,6 +96,19 @@ function inst_conda(){
     once "$title" "$check" "$cmd"
 }
 
+# install a node version via nvm (which must already be installed)
+#
+#    $1 - name of gem
+function inst_nvm() {
+    local title="node $1"
+    local pkg="$1"
+    local nvmsh="/usr/local/opt/nvm/nvm.sh"
+    local setup="export NVM_DIR=\"$HOME/.nvm\" && source \"$nvmsh\""
+    local cmd="( $setup && nvm install $pkg )"
+    local check="( $setup && nvm list $pkg )"
+    once "$title" "$check" "$cmd"
+}
+
 # Install homebrew, homebrew cask
 #
 function bootstrap() {