Use hyphens instead of underscores. Fix phaserjs#3751

Author: photonstorm

CHANGELOG.md

@@ -7,6 +7,7 @@
 ### Updates
 
 * DataManager.removeValue (and by extension the `remove` method too) will not emit the parent of the DataManager as the 2nd argument in the `removedata` event, to keep it consistent with the set events (thanks @rexrainbow)
+* The docs for the Loader `filecomplete` event said that you could listen for a specific file using its type and key, i.e.: `filecomplete-image-monster`, however, the code used an underscore instead of a hyphen. We feel the hyphen looks cleaner, so the Loader code has been updated, meaning you can now use the hyphen version of the event properly (thanks @NokFrt)
 
 ### Bug Fixes
 

src/loader/File.js

@@ -517,7 +517,7 @@ var File = new Class({
         var type = this.type;
 
         this.loader.emit('filecomplete', key, type, data);
-        this.loader.emit('filecomplete_' + type + '_' + key, key, type, data);
+        this.loader.emit('filecomplete-' + type + '-' + key, key, type, data);
 
         this.loader.flagForRemoval(this);
     },