README.md in google-map-stitch-0.1.2 vs README.md in google-map-stitch-0.1.3

@@ -17,15 +17,31 @@
 # entire map
 engine = GMS::Engine.new({:zoomLevel=>2})
 
 # subsection (South America)
 engine = GMS::Engine.new({
-  :startX => 131,
-  :endX => 201,
-  :startY => 235,
-  :endY => 360,
-  :zoomLevel => 10
+  :startX => 130,
+  :startY => 236,
+  :endX => 214,
+  :endY => 353,
+  :zoomLevel => 9
 })
+
+engine = GMS::Engine.new({
+  :startX => 1085,
+  :startY => 1889,
+
+})
+
+# subsection (Mexico)
+engine = GMS::Engine.new({
+  :startX => 10,
+  :startY => 25,
+  :endX => 19,
+  :endY => 31,
+  :zoomLevel => 6
+})
+
 ```
 
 ### Download Tiles
 ```ruby
 downloader = GMS::Downloader.new(engine.tiles, 'tiles_folder')