diff --git a/README.md b/README.md
index 53ec4aa..c9d791d 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,33 @@ join-dic-hunspell
 =================
 
 Join dic files to make a dic file for hunspell
+
+USAGE: join_dicts.py [options] <file/directory>...
+
+
+
+DESCRIPTION
+
+Join dic files and wordlists to make a dic file for hunspell. This can be used
+in texstudio and other programs. This repository includes some technical word
+lists for testing. Also a generic .aff file to go with the produced .dic file.
+
+
+
+ARGS:
+
+-d  dictionaries to combine
+
+
+
+EXAMPLE: python join_dicts.py -d en_GB_geo.dic en_NZ_geo_oil_maori.dic
+
+
+
+VERSION
+
+
+
+1
+
+Copyright (c) Michael Clark