add check for OHMYHSK_DIR

ohmy.ksh

@@ -2,9 +2,30 @@
 
 #${DEBUG}
 
+# Stub our load functions
+paths() {
+	return 0
+}
+
+load_extension() {
+	return 0
+}
+
+load_completion() {
+	return 0
+}
+
+set_prompt() {
+	return 0
+}
+
+if [ -z $OHMYKSH_DIR ]; then
+	echo "Please set OHMYKSH_DIR to the location of ohmyksh"
+else
 	LOAD_PATH="$OHMYKSH_DIR"
 
 	. ${LOAD_PATH}/lib/loader.ksh
 
 	set -A completions --
 	set -A extensions --
+fi