Update readme and gem to support windows

Author: DONGChuan

Gemfile.lock

@@ -46,6 +46,7 @@ GEM
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
     ffi (1.9.10)
+    ffi (1.9.10-x64-mingw32)
     geo_pattern (1.2.1)
       color (~> 1.5)
     globalid (0.3.6)
@@ -90,6 +91,8 @@ GEM
     multipart-post (2.0.0)
     nokogiri (1.6.7)
       mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.7-x64-mingw32)
+      mini_portile2 (~> 2.0.0.rc2)
     octokit (4.3.0)
       sawyer (~> 0.7.0, >= 0.5.3)
     protobuf (3.6.7)
@@ -151,6 +154,7 @@ GEM
 
 PLATFORMS
   ruby
+  x64-mingw32
 
 DEPENDENCIES
   jekyll-geo-pattern
@@ -160,4 +164,4 @@ DEPENDENCIES
   rough
 
 BUNDLED WITH
-   1.11.1
+   1.12.4

README.md

@@ -20,6 +20,8 @@ Features in feature:
 
 Before using it, you may need [Bower](http://bower.io/) and [Bundler](http://bundler.io/) on your local to install dependencies.
 
+> When install dependencies by bundler, you could have problem about installing json. Check response of [Massimo Fazzolari on Stackoverflow](http://stackoverflow.com/questions/8100891/the-json-native-gem-requires-installed-build-tools) to quick fix your problem. (Please also use latest version instead of 1.9.3 mentioned in the response)
+
 1. Fork code and clone
 2. Run `bower install` to install all dependencies in [bower.json](https://github.com/DONGChuan/DONGChuan.github.io/blob/master/bower.json)
 3. Run `bundle install` to install all dependencies in [Gemfile](https://github.com/DONGChuan/DONGChuan.github.io/blob/master/Gemfile)
@@ -28,7 +30,7 @@ Before using it, you may need [Bower](http://bower.io/) and [Bundler](http://bun
 6. Commit to your own Username.github.io repository.
 7. Then come back to star this theme!
 
-> For the moment, you could only test it on your local with internet connection. Bug will be fixed soon.
+> For the moment, when you test on your local, you need to keep internet connection. Bug will be fixed soon.
 
 ## How to use