Update README.md

Author: hannanstd

README.md

@@ -1,2 +1,34 @@
 # js-client-image-compress
-compress and resize image before uploading via browser and transform to base64
+Compress and Resize images via browser and transform it to base64.
+
+when i was working on a project, i saw that when i pick some images via fileInput, that image will rotate automatically!  
+after searching i understood that occures due to EXIF Orientation values. 
+
+https://sirv.com/help/resources/rotate-photos-to-be-upright/
+
+finaly i found a function that recognize the EXIF Orientation value.
+
+i combined this function to other functions that does below:
+
+1 - Recognizes EXIF Orientation value.  
+2 - Fixes Orientation to Original.  
+3 - Compresses image file size.  
+4 - Resizes Width & Height  
+5 - Delivers image as Base64
+
+### How to use:
+```javascript
+// <input type="file" id='image-picker'/>
+
+document.getElementById('image-picker').onchange = function() {
+    var file = this.files[0];
+    proccessImage(file, {
+        max_width: 1000,
+        max_height: 1000,
+        percent: 0.7, // percent of compress
+      }, function (base64) {
+        console.log(base64); // get output image as base64
+      }
+    );
+};
+```