Updated and add readme with custom props

README.md

@@ -48,6 +48,19 @@ docker run -v /home/sombochea/excel2json:/app/data -e APP_NAME="EXCEL 2 JSON" -e
 }
 ```
 
+# Custom Function Props
+```javascript
+{
+    mappings: [
+        {
+            "dataIndex": "Name",
+            "label": "Name"
+        }
+    ],
+    saveToOutput: false
+}
+```
+
 # Environment
 
 ```env

index.js

@@ -2,15 +2,7 @@
 const excel2json = require("./excel2json");
 
 // called function export excel2json
-const exported = excel2json({
-    mappings: [
-        {
-            "dataIndex": "Name",
-            "label": "Name"
-        }
-    ],
-    "saveToOutput": false
-});
+const exported = excel2json();
 
 // output data from exported
 console.log("Output =>\n", exported);