diff --git a/.gitignore b/.gitignore
index 095514b..39936eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ index.html
 test.html
 .*.swp
 .*.swo
+*.bak
diff --git a/README.md b/README.md
index e69de29..97e9ac0 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,9 @@
+   Pwgen For BIOS 
+============================
+
+    About
+---------------------------
+This code are based on python programs from [Dogbert's Blog](http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.html).
+
+It can calculate password for bios by hash.
+For more information [read this](http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.html).
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