Update README.md

README.md

@@ -22,29 +22,18 @@ Recent changes can be found in the [release notes](RELEASE-NOTES.md).
 
 ## Installation
 
-You can use [Composer](http://getcomposer.org/) to download and install
-this package as well as its dependencies. Alternatively you can simply clone
-the git repository and take care of loading yourself.
-
-### Composer
-
 To add this package as a local, per-project dependency to your project, simply add a
-dependency on `diff/diff` to your project's `composer.json` file.
+dependency on `wmde/euro` to your project's [`composer.json`](http://getcomposer.org/) file.
 Here is a minimal example of a `composer.json` file that just defines a dependency on
-Diff 2.x:
+Diff 3.x:
 
-    {
-        "require": {
-            "diff/diff": "2.*"
-        }
+```json
+{
+    "require": {
+        "diff/diff": "~3.0"
     }
-
-### Manual
-
-Get the Diff code, either via git, or some other means. Also get all dependencies.
-You can find a list of the dependencies in the "require" section of the composer.json file.
-Load all dependencies and the load the Diff library by including its entry point:
-Diff.php.
+}
+```
 
 ## High level structure