diff --git a/README.md b/README.md
index 73df470..a51b78b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,13 @@
 # filter
 
-A simple tool to filter the input interactively in a POSIX pipeline.
\ No newline at end of file
+A simple tool to filter the input interactively in a POSIX pipeline.
+
+## How to build?
+Just run `go build .`
+
+## Usage
+Use the filter command in a pipeline like:
+
+```bash
+git commit -a --fixup $(g log --oneline|./filter|cut -d ' ' -f 1 |xargs)
+```