Move city-list data into a separate module

sky/examples/data/cities.sky

Index: sky/examples/data/cities.sky
diff --git a/sky/examples/city-list/city-data-service.sky b/sky/examples/data/cities.sky
similarity index 99%
copy from sky/examples/city-list/city-data-service.sky
copy to sky/examples/data/cities.sky
index cd1855ff1dad44ece97559f9dd538712252e792b..32b8bfedcf694fee62df8880abc21f0d7fe2b522 100644
--- a/sky/examples/city-list/city-data-service.sky
+++ b/sky/examples/data/cities.sky
@@ -4,7 +4,7 @@
 // found in the LICENSE file.
 -->
 <script>
-var cities = [
+module.exports = [
   {"name":"New York","state":"New York","population":8363710},
   {"name":"Los Angeles","state":"California","population":3833995},
   {"name":"Chicago","state":"Illinois","population":2853114},
@@ -5005,44 +5005,4 @@ var cities = [
   {"name":"Hartwell","state":"Georgia","population":4298},
   {"name":"Newport","state":"North Carolina","population":4298}
 ];
-
-function CityDataService(cities) {
-  this.cities = cities;
-
-  // sort by state, city name.
-  this.cities.sort(function(a, b) {
-    if (a.state != b.state) {
-      return a.state < b.state ? -1 : 1;
-    }
-
-    return a.name < b.name ? -1 : 1;
-  });
-}
-
-CityDataService.prototype.get = function(index, count) {
-  var self = this;
-
-  return new Promise(function(fulfill) {
-    var result = [];
-    while (count-- > 0) {
-      while (index < 0) {
-        index += self.cities.length;
-      }
-      if (index >= self.cities.length)
-        index = index % self.cities.length;
-
-      result.push(self.cities[index]);
-      index++;
-    }
-
-    fulfill(result);
-  });
-}
-
-module.exports = {
-  service: new Promise(function(fulfill) {
-    fulfill(new CityDataService(cities));
-  })
-};
-
 </script>