Added nvm and post install scripts for nvm and docker-machine

brew

@@ -56,6 +56,7 @@ brew install jq
 brew install mkvtoolnix
 brew install ngrok2
 brew install nmap
+brew install nvm
 brew install openssl
 brew install pandoc
 brew install phantomjs

post/docker-machine

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+docker-machine create -d "virtualbox" --virtualbox-memory "3192" default

post/install-nvm-default

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+export NVM_DIR="$HOME/.nvm"
+
+. $(brew --prefix nvm)/nvm.sh
+nvm install node