diff --git a/cpp_impl/README.md b/cpp_impl/README.md
new file mode 100644
index 0000000..b4b9687
--- /dev/null
+++ b/cpp_impl/README.md
@@ -0,0 +1,10 @@
+# Usage
+
+    ./GreedyTextJustification -w 10 --string 'blah dah doop da doop'
+    Got width == 10
+    Got string == "blah dah doop da doop"
+    ----+----+
+    blah dah  
+    doop  da  
+    doop      
+    ----+----+