diff --git a/build.sh b/build.sh
index b2710a5..8aa3a9d 100755
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,7 @@
 #
 #  To use it, create a directory for your project (e.g. 'website'). Inside 'website', create
 #  two directories: 'source' (which holds your Markdown files) and 'output' (which holds the
-#  converted CSS.
+#  converted HTML.
 #
 #  In addition to these directories, three files are needed in 'website':
 #  1. 'header.html' - A header, which is prepended to every source file. Unfortunately, this must
@@ -21,6 +21,8 @@
 #  2. 'footer.html' - A footer, which is appended to every source file. Also must be written in HTML.
 #  3. 'styles.css' - A global stylesheet.
 #
+# The script takes in a parameter, which is the directory that contains the 'source' and 'output' folders.
+#
 # If you have any comments or questions, please email aadhavan@twomorecents.org.
 
 
@@ -31,8 +33,11 @@ set -o pipefail # Treat a pipeline as failing, even if one command in the pipeli
 if [[ "${TRACE-0}" == "1" ]]; then set -o xtrace; fi # Enable tracing (output of each command) if the TRACE variable is set
 
 
-
-BASE_PATH="$(dirname "$0")"
+if [ "$#" -ne 1 ]; then
+	echo "ERROR: Invalid number of paramters. Read script for more details."
+	exit
+fi
+BASE_PATH=$(cd "$1"; pwd)
 
 check_for_dirs() {
 	if [[ ! -d "${BASE_PATH}/source" ]]; then