fix: Add reload API

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    rate_center (0.1.2)
+    rate_center (0.1.4)
 
 GEM
   remote: https://rubygems.org/

lib/rate_center/collection.rb

@@ -6,6 +6,10 @@ def collection
       @collection ||= load_collection
     end
 
+    def reload!
+      @collection = load_collection
+    end
+
     def all
       collection
     end

spec/city_spec.rb

@@ -16,6 +16,20 @@ module RateCenter
       )
     end
 
+    it "reloads the data" do
+      ::RateCenter.load(:cities, only: { us: { ny: "New York", ca: "Los Angeles" } })
+
+      cities = City.all
+
+      expect(cities.size).to eq(2)
+
+      ::RateCenter.load(:cities, only: { us: { ny: "New York", ca: [ "San Francisco", "Los Angeles" ] } })
+      expect(cities.size).to eq(2)
+
+      City.reload!
+      expect(City.all.size).to eq(3)
+    end
+
     it "finds a city" do
       ::RateCenter.load(:cities, only: { us: { ny: "New York" } })