update

README.md

 # am-xlsx2json
 
 
-Converting xlsx file to json files using nodejs (js-xlsx)
+Converting xlsx file to json files using nodejs (am-xlsx2json)
 
 ## Install
 
@@ -12,7 +12,7 @@ Converting xlsx file to json files using nodejs (js-xlsx)
 ## Usage
 
 ```javascript
-  am_xlsx2json = require("am-xlsx2json");
+  var am_xlsx2json = require("am-xlsx2json");
   am_xlsx2json({
     input: "sample.xlsx", // path of excel file / uploaded file
     output: "output.json" // if  set  it will write to file
@@ -30,11 +30,11 @@ Converting xlsx file to json files using nodejs (js-xlsx)
 You can optionally provide a sheet name to extract from that sheet
 
 ```javascript
-  am_xlsx2json = require("am-xlsx2json");
+  var am_xlsx2json = require("am-xlsx2json");
   am_xlsx2json({
     input: "sample.xlsx", // path of excel file / uploaded file
     output: "output.json" // if  set  it will write to file
-    sheet: "tags"
+    sheet: ["Sheet1","Sheet4"] //array of selected sheet
   }, function(err, result) {
     if(err) {
       console.error(err);