Some more text/plain to application/json.

src/loaders/GeometryLoader.js

@@ -54,6 +54,7 @@ THREE.GeometryLoader.prototype = {
 		}, false );
 
 		xhr.open( 'GET', url, true );
+		xhr.setRequestHeader( "Content-Type", "application/json" );
 		xhr.send( null );
 
 		//

src/loaders/SceneLoader.js

@@ -41,8 +41,8 @@ THREE.SceneLoader.prototype.load = function( url, callbackFinished ) {
 	};
 
 	xhr.open( "GET", url, true );
-	if ( xhr.overrideMimeType ) xhr.overrideMimeType( "text/plain; charset=x-user-defined" );
-	xhr.setRequestHeader( "Content-Type", "text/plain" );
+	if ( xhr.overrideMimeType ) xhr.overrideMimeType( "application/json; charset=x-user-defined" );
+	xhr.setRequestHeader( "Content-Type", "application/json" );
 	xhr.send( null );
 
 };