Add readme info

README.md

@@ -5,9 +5,17 @@
 ![build](https://github.com/Intervention/gif/actions/workflows/build.yml/badge.svg)
 [![Monthly Downloads](https://img.shields.io/packagist/dm/intervention/gif.svg)](https://packagist.org/packages/intervention/gif/stats)
 
+Intervention GIF is a PHP encoder and decoder for the GIF image format that
+does not depend on any image processing extension. 
+
+Only the special `Splitter::class` class divides the data stream of an animated
+GIF into individual `GDImage´ objects for each frame and therefore depend on
+the GD library.
+
 ## Installation
 
-You can install this package easily with [Composer](https://getcomposer.org/). Just require the package with the following command:
+You can easily install this package using [Composer](https://getcomposer.org).
+Just request the package with the following command:
 
 ```bash
 composer require intervention/gif
@@ -21,7 +29,7 @@ composer require intervention/gif
 use Intervention\Gif\Decoder;
 
 // Decode filepath to Intervention\Gif\GifDataStream::class
-$gif = Decoder::decode('/images/animation.gif');
+$gif = Decoder::decode('images/animation.gif');
 
 // Decoder can also handle binary content directly
 $gif = Decoder::decode($contents);
@@ -34,12 +42,8 @@ Use the Builder class to create a new GIF image.
 ```php
 use Intervention\Gif\Builder;
 
-// create an empty canvas
-$width = 32;
-$height = 32;
-
-// create new gif with width/height
-$gif = Builder::canvas($width, $height);
+// create new gif canvas
+$gif = Builder::canvas(width: 32, height: 32);
 
 // add animation frames to canvas
 $delay = .25; // delay in seconds after next frame is displayed
@@ -48,10 +52,10 @@ $top = 0; // position offset (top)
 
 // add animation frames with optional delay in seconds
 // and optional position offset for each frame
-$gif->addFrame('/images/frame01.gif', $delay, $left, $top);
-$gif->addFrame('/images/frame02.gif', $delay, $left);
-$gif->addFrame('/images/frame03.gif', $delay);
-$gif->addFrame('/images/frame04.gif');
+$gif->addFrame('images/frame01.gif', $delay, $left, $top);
+$gif->addFrame('images/frame02.gif', $delay, $left);
+$gif->addFrame('images/frame03.gif', $delay);
+$gif->addFrame('images/frame04.gif');
 
 // set loop count; 0 for infinite looping
 $gif->setLoops(12);