Merge pull request #4 from bozaro/line-num

Add lost `line-num` style to deleted lines
diff --git a/README.md b/README.md
index 9a6a79d..b55e02b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![GoDoc](https://godoc.org/github.com/aryann/difflib?status.svg)](http://godoc.org/github.com/aryann/difflib)
+
 difflib
 =======