📝 README updated 📝 👈🏼 ✏️ ☝🏼

README.md

@@ -1,7 +1,12 @@
 # Overview :
+Generate CSV document  according to given data.
+
+This data can be array of arrays , or array of literal objects or string which is the CSV content.
+
+# Example :
 
 ```js
-import {CSVLink} from 'react-csv';
+import {CSVLink, CSVDownload} from 'react-csv';
 
 
 const csvData =[
@@ -11,5 +16,103 @@ const csvData =[
   ['Yezzi','Min l3b', 'ymin@cocococo.com']
 ];
 <CSVLink data={csvData} >Download me</CSVLink>
+// or
+<CSVDownload data={csvData} target="_blank" />
+```
+
+# Components:
+
+This package includes actually two components: `CSVLink` and `CSVDownload`.
+
+## 0. Common Props:
+
+The two components accepts the following `Props`:
+
+- **data** : a required property that represents the CSV data.
+This data can be *array of arrays*, *array of literal objects* or *string*.
+
+**.i.e (array of arrays)**
+```js
+//array of arrays : each item is rendered as csv line
+data = =[
+  ['firstname', 'lastname', 'email'] ,
+  ['Ahmed', 'Tomi' , 'ah@smthing.co.com'] ,
+  ['Raed', 'Labes' , 'rl@smthing.co.com'] ,
+  ['Yezzi','Min l3b', 'ymin@cocococo.com']
+];
+```
+
+**.i.e (array of literal objects)**
+```js
+//array of literal objects : each item is rendered as csv line however the order of fields will be defined by headers props .If headers props is not defined , the component will generate headers from all data items.
+data = [
+  {firstname: 'Ahmed', lastname: 'Tomi' , email: 'ah@smthing.co.com'},
+  {firstname:'Raed', lastname:'Labes' , email:'rl@smthing.co.com'} ,
+  {firstname:'Yezzi', lastname:'Min l3b', email:'ymin@cocococo.com'}
+];
+```
+
+**.i.e (string)**
+
+```js
+//if the data is string , this means the csv content is already generated by developer/3rd party package.
+
+data =`firstname,lastname
+Ahmed,Tomi
+Raed,Labes
+Yezzi,Min l3b
+`;
+// or using 3rd party package
+import json2csv from 'json2csv';
+data = json2csv(arrayOfLiteralObjects);      
 
 ```
+
+- **headers** : Specifying `headers` helps to define an order of CSV fields , so , the csv content will be generated accordingly.
+
+> Notes :
+>  - The meaning of headers with data of type `Array` is to order fields AND prepend those headers at the top of CSV content.
+>  - The meaning of headers  with data of type `String` data is only  prepending those headers as the first line of CSV content.
+
+
+
+
+## 1. CSVLink Component:
+
+It renders a hyperlink , and  clicking on it will trigger the download action of the CSV document.
+
+It does not accept only `data` and `headers` props , but also , it rendered all props of `HTMLAnchor` tag. (className, target,....)
+
+**example**
+
+```js
+import {CSVLink} from 'react-csv';
+
+<CSVLink data={data}
+  className="btn btn-primary"
+  target="_blank">
+    Download me
+</CSVLink>
+
+```
+
+
+## 2. CSVDownload Component:
+
+It triggers downloading ONLY on mounting the component. so , be careful to render this component whenever it is needed.
+
+It does not accept only `data` and `headers` props , but also , it takes advantage of  all arguments of `window.open` function known that its signature is :
+
+```js
+window.open(ARG0, target, specs, replace )
+```
+
+Thus, `target`, `specs` and `replace` Props are available .
+
+**example**
+
+```js
+import {CSVDownload} from 'react-csv';
+
+<CSVDownload data={data} target="_blank" />
+```