diff --git a/README.md b/README.md
index d661875..934d949 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,21 @@
 # packelf-appimage
 
-Pack elf binary and it's dependencies into standalone executable using appimagetool
\ No newline at end of file
+Pack elf binary and it's dependencies into standalone executable using appimagetool.
+`packelf-appimage` was inspired by https://github.com/oufm/packelf. 
+
+
+## usage
+
+```
+Usage: ./packelf-appimage.sh <ELF_SRC_PATH> <ELF_DST_PATH>
+```
+
+## dependence
+* sh
+* tar
+* sed
+* grep
+* chmod
+* appimagetool (https://github.com/AppImage/appimagetool/releases)
+* ldd (only needed for packing, not needed for executing or unpacking)
+