add check for OHMYHSK_DIR

ohmy.ksh

@@ -2,9 +2,30 @@
 
 #${DEBUG}
 
-LOAD_PATH="$OHMYKSH_DIR"
+# Stub our load functions
+paths() {
+	return 0
+}
 
-. ${LOAD_PATH}/lib/loader.ksh
+load_extension() {
+	return 0
+}
 
-set -A completions --
-set -A extensions --
+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