Set version to 'canary' on development branch

Official releases are either merged into master or branched off where their version number is then incremented.

Author: DaneEveritt

config/app.php

@@ -4,7 +4,7 @@
 
     'env' => env('APP_ENV', 'production'),
 
-    'version' => env('APP_VERSION', 'v0.5.0'),
+    'version' => env('APP_VERSION', 'canary'),
 
     /*
     |--------------------------------------------------------------------------