Update Readme

yehiahd · yehiahd · commit 2e6c68b98e20 · 2018-05-24T15:14:47.000+02:00
diff --git a/README.md b/README.md
@@ -110,5 +110,5 @@ FastSave.getInstance().clearSession();
 ```java
 
 //Check Key exists or not
-boolean isExists = FastSave.getInstance().isKeyExists()
+boolean isExists = FastSave.getInstance().isKeyExists(key)
 ```
