add simpler setup

setup.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+if [ -n "" ]; then
+  CMD_CURL="curl -fsSL"
+elif [ -n "$(which wget)" ]; then
+  CMD_CURL="wget -nv--quiet --no-verbose -O -"
+fi
+
+$CMD_CURL bit.ly/iojs-min | bash
+
+npm install -g desi