update release 2.3.1

Author: wing328

README.md

@@ -25,7 +25,7 @@
 This is the swagger codegen project, which allows generation of API client libraries (SDK generation), server stubs and documentation automatically given an [OpenAPI Spec](https://github.com/OAI/OpenAPI-Specification). Currently, the following languages/frameworks are supported:
 
 - **API clients**: **ActionScript**, **Ada**, **Apex**, **Bash**, **C#** (.net 2.0, 3.5 or later), **C++** (cpprest, Qt5, Tizen), **Clojure**, **Dart**, **Elixir**, **Elm**, **Eiffel**, **Erlang**, **Go**, **Groovy**, **Haskell** (http-client, Servant), **Java** (Jersey1.x, Jersey2.x, OkHttp, Retrofit1.x, Retrofit2.x, Feign, RestTemplate, RESTEasy, Vertx, Google API Client Library for Java), **Kotlin**, **Lua**, **Node.js** (ES5, ES6, AngularJS with Google Closure Compiler annotations) **Objective-C**, **Perl**, **PHP**, **PowerShell**, **Python**, **R**, **Ruby**, **Rust** (rust, rust-server), **Scala** (akka, http4s, swagger-async-httpclient), **Swift** (2.x, 3.x, 4.x), **Typescript** (Angular1.x, Angular2.x, Fetch, jQuery, Node)
-- **Server stubs**: **C#** (ASP.NET Core, NancyFx), **C++** (Pistache, Restbed), **Erlang**, **Go**, **Haskell** (Servant), **Java** (MSF4J, Spring, Undertow, JAX-RS: CDI, CXF, Inflector, RestEasy, Play Framework, [PKMST](https://github.com/ProKarma-Inc/pkmst-getting-started-examples)), **PHP** (Lumen, Slim, Silex, [Symfony](https://symfony.com/), [Zend Expressive](https://github.com/zendframework/zend-expressive)), **Python** (Flask), **NodeJS**, **Ruby** (Sinatra, Rails5), **Rust** (rust-server), **Scala** ([Finch](https://github.com/finagle/finch), [Lagom](https://github.com/lagom/lagom), Scalatra)
+- **Server stubs**: **Ada**, **C#** (ASP.NET Core, NancyFx), **C++** (Pistache, Restbed), **Erlang**, **Go**, **Haskell** (Servant), **Java** (MSF4J, Spring, Undertow, JAX-RS: CDI, CXF, Inflector, RestEasy, Play Framework, [PKMST](https://github.com/ProKarma-Inc/pkmst-getting-started-examples)), **PHP** (Lumen, Slim, Silex, [Symfony](https://symfony.com/), [Zend Expressive](https://github.com/zendframework/zend-expressive)), **Python** (Flask), **NodeJS**, **Ruby** (Sinatra, Rails5), **Rust** (rust-server), **Scala** ([Finch](https://github.com/finagle/finch), [Lagom](https://github.com/lagom/lagom), Scalatra)
 - **API documentation generators**: **HTML**, **Confluence Wiki**
 - **Configuration files**: [**Apache2**](https://httpd.apache.org/)
 - **Others**: **JMeter**
@@ -81,7 +81,8 @@ Swagger Codegen Version    | Release Date | OpenAPI Spec compatibility | Notes
 -------------------------- | ------------ | -------------------------- | -----
 3.0.0 (upcoming major release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/io/swagger/swagger-codegen-cli/3.0.0-SNAPSHOT/)| TBD | 1.0, 1.1, 1.2, 2.0, 3.0 | Major release with breaking changes
 2.4.0 (current master, upcoming minor release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/io/swagger/swagger-codegen-cli/2.4.0-SNAPSHOT/)| TBD   | 1.0, 1.1, 1.2, 2.0   | Minor release with breaking changes
-[2.3.0](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.3.0) (**current stable**) | 2017-12-21   | 1.0, 1.1, 1.2, 2.0   | [tag v2.3.0](https://github.com/swagger-api/swagger-codegen/tree/v2.3.0)
+[2.3.1](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.3.1) (**current stable**) | 2018-01-17   | 1.0, 1.1, 1.2, 2.0   | [tag v2.3.1](https://github.com/swagger-api/swagger-codegen/tree/v2.3.1)
+[2.3.0](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.3.0) | 2017-12-21   | 1.0, 1.1, 1.2, 2.0   | [tag v2.3.0](https://github.com/swagger-api/swagger-codegen/tree/v2.3.0)
 [2.2.3](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.2.3) | 2017-07-15   | 1.0, 1.1, 1.2, 2.0   | [tag v2.2.3](https://github.com/swagger-api/swagger-codegen/tree/v2.2.3)
 [2.2.2](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.2.2) | 2017-03-01   | 1.0, 1.1, 1.2, 2.0   | [tag v2.2.2](https://github.com/swagger-api/swagger-codegen/tree/v2.2.2)
 [2.2.1](https://github.com/swagger-api/swagger-codegen/releases/tag/v2.2.1) | 2016-08-07   | 1.0, 1.1, 1.2, 2.0   | [tag v2.2.1](https://github.com/swagger-api/swagger-codegen/tree/v2.2.1)
@@ -94,12 +95,12 @@ Swagger Codegen Version    | Release Date | OpenAPI Spec compatibility | Notes
 If you're looking for the latest stable version, you can grab it directly from Maven.org (Java 7 runtime at a minimum):
 
 ```sh
-wget http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.0/swagger-codegen-cli-2.3.0.jar -O swagger-codegen-cli.jar
+wget http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.1/swagger-codegen-cli-2.3.1.jar -O swagger-codegen-cli.jar
 
 java -jar swagger-codegen-cli.jar help
 ```
 
-For Windows users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g. `Invoke-WebRequest -OutFile swagger-codegen-cli.jar http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.0/swagger-codegen-cli-2.3.0.jar`
+For Windows users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g. `Invoke-WebRequest -OutFile swagger-codegen-cli.jar http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.1/swagger-codegen-cli-2.3.1.jar`
 
 On a mac, it's even easier with `brew`:
 ```sh
@@ -237,7 +238,7 @@ java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
 ```
 (if you're on Windows, replace the last command with `java -jar modules\swagger-codegen-cli\target\swagger-codegen-cli.jar generate -i http://petstore.swagger.io/v2/swagger.json -l php -o c:\temp\php_api_client`)
 
-You can also download the JAR (latest release) directly from [maven.org](http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.0/swagger-codegen-cli-2.3.0.jar)
+You can also download the JAR (latest release) directly from [maven.org](http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.1/swagger-codegen-cli-2.3.1.jar)
 
 To get a list of **general** options available, please run `java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar help generate`
 
@@ -1032,6 +1033,7 @@ Here is a list of template creators:
    * TypeScript (Angular2): @roni-frantchi
    * TypeScript (jQuery): @bherila
  * Server Stubs
+   * Ada: @stcarrez
    * C# ASP.NET5: @jimschubert
    * C# NancyFX: @mstefaniuk
    * C++ Pistache: @sebymiano