Prepare 3.0.0-alpha1 release

Author: willdurand

CHANGELOG.md

@@ -1,7 +1,9 @@
 CHANGELOG
 =========
 
-### 3.0.0 (????-??-??)
+## 3.0.0
+
+### 3.0.0-alpha1
 
 * Added: `using()` method now throws an exception if provider not found
 * Added: new Result classes (`Address`, `Bounds`, `Region`, `Country`, `County`, `Coordinates`)
@@ -44,6 +46,8 @@ CHANGELOG
 * Removed: the `Geocoder` class does not exist anymore and has been replaced by
   the `ProviderAggregator` class
 
+## 2.x
+
 ### 2.8.1 (2014-12-08)
 
 * Fixed: freegeoip `zip_code` property because of an API change

src/Geocoder/Geocoder.php

@@ -20,7 +20,7 @@ interface Geocoder
     /**
      * Version
      */
-    const VERSION = '3.0.0-dev';
+    const VERSION = '3.0.0-alpha1';
 
     /**
      * Geocodes a given value.