[ci skip] update guide for Puma web server instead of Webrick

Rails 5.0 default server puma web server. following commit - https://github.com/rails/rails/commit/ae48ea69

4 files changed, 14 insertions, 17 deletions

diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md
index f68f2d1faf..9ef2c1a441 100644
--- a/guides/source/action_controller_overview.md
+++ b/guides/source/action_controller_overview.md
@@ -995,10 +995,6 @@ you would like in a response object. The `ActionController::Live` module allows
 you to create a persistent connection with a browser. Using this module, you will
 be able to send arbitrary data to the browser at specific points in time.
 
-NOTE: The default Rails server (WEBrick) is a buffering web server and does not
-support streaming. In order to use this feature, you'll need to use a non buffering
-server like [Puma](http://puma.io), [Rainbows](http://rainbows.bogomips.org)
-or [Passenger](https://www.phusionpassenger.com).
 
 #### Incorporating Live Streaming
 
diff --git a/guides/source/command_line.md b/guides/source/command_line.md
index 5240b5f343..d31b3084e5 100644
--- a/guides/source/command_line.md
+++ b/guides/source/command_line.md
@@ -55,20 +55,21 @@ Rails will set you up with what seems like a huge amount of stuff for such a tin
 
 ### `rails server`
 
-The `rails server` command launches a small web server named WEBrick which comes bundled with Ruby. You'll use this any time you want to access your application through a web browser.
+The `rails server` command launches a web server named Puma which comes bundled with Rails. You'll use this any time you want to access your application through a web browser.
 
 With no further work, `rails server` will run our new shiny Rails app:
 
 ```bash
 $ cd commandsapp
 $ bin/rails server
-=> Booting WEBrick
-=> Rails 5.0.0 application starting in development on http://localhost:3000
+=> Booting Puma
+=> Rails 5.0.0 application starting in development on http://0.0.0.0:3000
 => Run `rails server -h` for more startup options
 => Ctrl-C to shutdown server
-[2013-08-07 02:00:01] INFO  WEBrick 1.3.1
-[2013-08-07 02:00:01] INFO  ruby 2.2.2 (2015-06-27) [x86_64-darwin11.2.0]
-[2013-08-07 02:00:01] INFO  WEBrick::HTTPServer#start: pid=69680 port=3000
+Puma 2.15.3 starting...
+* Min threads: 0, max threads: 16
+* Environment: development
+* Listening on tcp://localhost:3000
 ```
 
 With just three commands we whipped up a Rails server listening on port 3000. Go to your browser and open [http://localhost:3000](http://localhost:3000), you will see a basic Rails app running.
@@ -181,7 +182,7 @@ Fire up your server using `rails server`.
 
 ```bash
 $ bin/rails server
-=> Booting WEBrick...
+=> Booting Puma...
 ```
 
 The URL will be [http://localhost:3000/greetings/hello](http://localhost:3000/greetings/hello).
diff --git a/guides/source/debugging_rails_applications.md b/guides/source/debugging_rails_applications.md
index 0046ff7b4e..35ad6eb705 100644
--- a/guides/source/debugging_rails_applications.md
+++ b/guides/source/debugging_rails_applications.md
@@ -311,14 +311,14 @@ processing the entire request.
 For example:
 
 ```bash
-=> Booting WEBrick
+=> Booting Puma
 => Rails 5.0.0 application starting in development on http://0.0.0.0:3000
 => Run `rails server -h` for more startup options
-=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
 => Ctrl-C to shutdown server
-[2014-04-11 13:11:47] INFO  WEBrick 1.3.1
-[2014-04-11 13:11:47] INFO  ruby 2.2.2 (2015-04-13) [i686-linux]
-[2014-04-11 13:11:47] INFO  WEBrick::HTTPServer#start: pid=6370 port=3000
+Puma 2.15.3 starting...
+* Min threads: 0, max threads: 16
+* Environment: development
+* Listening on tcp://localhost:3000
 
 
 Started GET "/" for 127.0.0.1 at 2014-04-11 13:11:48 +0200
diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md
index 857b5ced22..eae37f648d 100644
--- a/guides/source/getting_started.md
+++ b/guides/source/getting_started.md
@@ -208,7 +208,7 @@ commented line for new apps and you can uncomment if you need it.
 default to the `Gemfile` in apps generated under JRuby. You can investigate
 all the supported runtimes at [ExecJS](https://github.com/rails/execjs#readme).
 
-This will fire up WEBrick, a web server distributed with Ruby by default. To see
+This will fire up Puma, a web server distributed with Rails by default. To see
 your application in action, open a browser window and navigate to
 <http://localhost:3000>. You should see the Rails default information page: