diff --git a/Adapter/EBookAdapter.php b/Adapter/EBookAdapter.php
index 9677553..d8c5574 100644
--- a/Adapter/EBookAdapter.php
+++ b/Adapter/EBookAdapter.php
@@ -5,7 +5,7 @@ namespace DesignPatterns\Adapter;
 /**
  * EBookAdapter is an adapter to fit an e-book like a paper book
  * 
- * This is the adapter here. Notice it implemennts PaperBookInterface,
+ * This is the adapter here. Notice it implements PaperBookInterface,
  * therefore you don't have to change the code of the client which using paper book.
  */
 class EBookAdapter implements PaperBookInterface
diff --git a/Adapter/README.md b/Adapter/README.md
new file mode 100644
index 0000000..5d77709
--- /dev/null
+++ b/Adapter/README.md
@@ -0,0 +1,10 @@
+# Adapter / Wrapper
+
+## Purpose
+
+To translate one interface for a class into a compatible interface. An adapter allows classes to work together that normally could not because of incompatible interfaces by providing it's interface to clients while using the original interface.
+
+## Examples
+
+* DB Client libraries adapter
+* using multiple different webservices and adapters normalize data so that the outcome is the same for all