feat: add readme for entries method of array/fixed-endian-factory

Author: Vinit-Pandit

lib/node_modules/@stdlib/array/fixed-endian-factory/README.md

@@ -705,6 +705,60 @@ var str = arr.toString();
 
 * * *
 
+<a name="method-entries"></a>
+
+#### TypedArrayFE.prototype.entries()
+
+Return and iterator for iterating over array key-value pairs.
+
+```javascript
+var factory = require( '@stdlib/array/fixed-endian-factory' );
+var int32arr = factory( 'int32' );
+var arr = int32arr( 'little-endian', [ 1, 2, 3, 4, 5 ] );
+
+// Creat an iterator:
+var itr = arr.entries();
+
+// Iterate over the key-value pairs...
+var v = itr.next().value;
+// returns [ 0, 1 ];
+
+var i = v[1];
+// returns 1;
+
+v = itr.next().value;
+// returns [ 1, 2 ];
+
+i = v[1];
+// returns 2;
+
+v = itr.next().value;
+// returns [ 2, 3 ];
+
+i = v[1];
+// returns 3;
+
+v = itr.next().value;
+// returns [ 3, 4 ]
+
+i = v[1];
+// returns 4
+
+v = itr.next().value;
+// returns [ 4, 5 ];
+
+i = v[1];
+// returns 5
+
+var bool = itr.next().done;
+// returns true
+```
+
+The returned [iterator][mdn-iterator-protocol] protocol-compliant object has the following properties:
+
+-   **next**: function which returns an [iterator][mdn-iterator-protocol] protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the [iterator][mdn-iterator-protocol] is finished.
+-   **return**: function which closes an [iterator][mdn-iterator-protocol] and returns a single (optional) argument in an [iterator][mdn-iterator-protocol] protocol-compliant object.
+
 ## Notes
 
 -   A returned constructor supports the following byte orders:
@@ -782,6 +836,8 @@ logEach( '%s', out );
 
 <section class="links">
 
+[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol
+
 [@stdlib/array/typed]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/typed
 
 [@stdlib/array/buffer]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/buffer
@@ -793,3 +849,4 @@ logEach( '%s', out );
 </section>
 
 <!-- /.links -->
+