Beautify with js-beautify.

Update Makefile to support format
Update README.md to add information about format json2csv

Makefile

@@ -1,4 +1,7 @@
 test:
 	./node_modules/.bin/mocha --reporter spec
+
+format:
+	js-beautify lib/json2csv.js -r --config js-beautify.json 
 
-.PHONY: test
+.PHONY: test

README.md

@@ -258,6 +258,21 @@ or
 ```bash
 $ npm test
 ```
+
+## Formatting json2csv
+
+Requires js-beautify (npm -g install js-beautify).
+
+Run
+
+```bash
+$ make format
+```
+## Contributors
+
+Could you please make sure code is formatted and test passed before submit Pull Requests?
+
+See Testing and Formatting json2csv above.
 
 ## But I want streams!
 

lib/json2csv.js

@@ -1,4 +1,3 @@
-
 /**
  * Module dependencies.
  */
@@ -34,43 +33,43 @@ module.exports = function(params, callback) {
 
  */
 var typeOf = function(obj) {
-	return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
+  return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
 }
 
 /**
  * Check passing params
  *
  * @param {Object} params Function parameters containing data, fields,
- * delimiter and hasCSVColumnTitle 
+ * delimiter and hasCSVColumnTitle
  * @param {Function} callback Callback function returning error when invalid field is found
  */
 var checkParams = function(params, callback) {
   //#check params.data
   params.data = JSON.parse(JSON.stringify(params.data));
-  
+
   // if data is an Object, not in array [{}], then just create 1 item array.
   // So from now all data in array of object format.
-	if(typeOf(params.data) != 'array'){
-		var ar = new Array();
-		ar[0]=params.data;
-		params.data = ar;
-	}
-  
+  if (typeOf(params.data) != 'array') {
+    var ar = new Array();
+    ar[0] = params.data;
+    params.data = ar;
+  }
+
   //#check fieldNames
   if (params.fieldNames && params.fieldNames.length !== params.fields.length) {
     callback(new Error('fieldNames and fields should be of the same length, if fieldNames is provided.'));
   }
 
   params.fieldNames = params.fieldNames || params.fields;
-  
+
   //#check delimiter
   params.del = params.del || ',';
-  
+
   //#check hasCSVColumnTitle, if it is not explicitly set to false then true.
-  if(params.hasCSVColumnTitle !== false){
+  if (params.hasCSVColumnTitle !== false) {
     params.hasCSVColumnTitle = true;
   }
-	callback(null);
+  callback(null);
 };
 
 /**
@@ -83,7 +82,7 @@ var createColumnTitles = function(params, callback) {
   var str = '';
 
   //if CSV has column title, then create it
-  if(params.hasCSVColumnTitle) {
+  if (params.hasCSVColumnTitle) {
     params.fieldNames.forEach(function(element) {
       if (str !== '') {
         str += params.del;
@@ -104,7 +103,7 @@ var createColumnTitles = function(params, callback) {
 var createColumnContent = function(params, str, callback) {
   params.data.forEach(function(data_element) {
     //if null or empty object do nothing
-    if(data_element && Object.getOwnPropertyNames(data_element).length > 0 ) {
+    if (data_element && Object.getOwnPropertyNames(data_element).length > 0) {
       var line = '';
       var eol = os.EOL || '\n';
       params.fields.forEach(function(field_element) {
@@ -120,4 +119,4 @@ var createColumnContent = function(params, str, callback) {
     }
   });
   callback(str);
-};
+};