Rename attributes to properties.

lib/carto/tree/layer.js

@@ -3,7 +3,7 @@
 tree.Layer = function Layer(obj) {
     this.name = obj.name;
     this.styles = obj.styles;
-    this.attributes = obj.attributes || {};
+    this.properties = obj.properties  || {};
     this.srs = obj.srs;
     this.datasource = obj.Datasource;
 };
@@ -15,14 +15,14 @@ tree.Layer.prototype.toXML = function() {
             this.datasource[i] + ']]></Parameter>');
     }
 
-    var attr_string = '';
-    for (var i in this.attributes) {
-        attr_string += '  ' + i + '="' + this.attributes[i] + '"\n';
+    var prop_string = '';
+    for (var i in this.properties) {
+        prop_string += '  ' + i + '="' + this.properties[i] + '"\n';
     }
 
     return '<Layer' +
         ' name="' + this.name + '"\n' +
-        attr_string +
+        prop_string +
         '  srs="' + this.srs + '">\n    ' +
         this.styles.reverse().map(function(s) {
             return '<StyleName>' + s + '</StyleName>';

test/rendering/layer_properties.mml

@@ -1,12 +1,12 @@
 {
     "srs": "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over",
     "Stylesheet": [
-        "layer_attributes.mss"
+        "layer_properties.mss"
     ],
     "Layer": [{
         "name": "world",
         "srs": "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over",
-        "attributes": {
+        "properties": {
             "cache-features": "true"
         },
         "Datasource": {