Rename toQuadKey to quadKey

src/ol/tile/tilecoord.js

@@ -95,7 +95,7 @@ ol.TileCoord.prototype.hash = function() {
 /**
  * @return {string} Quad key.
  */
-ol.TileCoord.prototype.toQuadKey = function() {
+ol.TileCoord.prototype.quadKey = function() {
   var digits = new Array(this.z);
   var mask = 1 << (this.z - 1);
   var i, charCode;

src/ol/tile/tilecoord_test.js

@@ -27,8 +27,8 @@ function testCreateFromString() {
 }
 
 
-function testToQuadKey() {
+function testQuadKey() {
-  assertEquals('213', (new ol.TileCoord(3, 3, 5)).toQuadKey());
+  assertEquals('213', (new ol.TileCoord(3, 3, 5)).quadKey());
 }