HemisphereLight: Default to 0,1,0. See #7155.

src/lights/HemisphereLight.js

@@ -8,7 +8,7 @@ THREE.HemisphereLight = function ( skyColor, groundColor, intensity ) {
 
 	this.type = 'HemisphereLight';
 
-	this.position.set( 0, 100, 0 );
+	this.position.set( 0, 1, 0 );
 	this.updateMatrix();
 
 	this.groundColor = new THREE.Color( groundColor );