Refactored the orignal setup script as the build script

Necessary to organize this within the `bin` folder.

bin/build

@@ -1,6 +1,11 @@
 #! /usr/bin/env bash
-# save the current directory
-  pushd .
+
+set -o errexit
+set -o nounset
+set -o pipefail
+IFS=$'\n\t'
+
+pushd .
 cd ~
 mkdir Projects
 cd Projects
@@ -10,7 +15,5 @@ make
 sudo apt install -y i2c-tools libi2c-dev
 sudo raspi-config nonint do_i2c 0
 
-# restore the original directory
-  popd
+popd
 make
-