compiler dir-independent, sh>bash

.scripts/compiler

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # This script will compile or run another finishing operation on a document. I
 # have this script run via vim.
@@ -14,7 +14,7 @@ oridir=$(pwd)
 file=$(readlink -f "$1")
 dir=$(dirname "$file")
 base="${file%.*}"
-cd $dir
+cd "$dir" || exit
 
 textype() { \
 	command="pdflatex"
@@ -33,4 +33,4 @@ case "$file" in
 	*config.h) make && sudo make install ;;
 	*) sent "$file" 2>/dev/null & ;;
 esac
-cd $oridir
+cd "$oridir" || exit