Merge pull request #358 from arey

* pr/358:
  Polish "Add documentation for IntelliJ IDEA"
  Add documentation for IntelliJ IDEA

readme.md

@@ -40,30 +40,44 @@ You could start MySql locally with whatever installer works for your OS, or with
 docker run -e MYSQL_ROOT_PASSWORD=petclinic -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:5.7.8
 ```
 
-## Working with Petclinic in Eclipse/STS
+## Working with Petclinic in your IDE
 
 ### prerequisites
 The following items should be installed in your system:
 * Java 8 or newer.
 * git command line tool (https://help.github.com/articles/set-up-git)
-* Eclipse with the m2e plugin (m2e is installed by default when using the STS (http://www.springsource.org/sts) distribution of Eclipse)
-
-Note: when m2e is available, there is an m2 icon in Help -> About dialog.
-If m2e is not there, just follow the install process here: http://www.eclipse.org/m2e/m2e-downloads.html
-
+* Your prefered IDE 
+  * Eclipse with the m2e plugin. Note: when m2e is available, there is an m2 icon in Help -> About dialog. If m2e is not there, just follow the install process here: http://www.eclipse.org/m2e/
+  * [Spring Tools Suite](https://spring.io/tools) (STS)
+  * IntelliJ IDEA
 
 ### Steps:
 
-1) In the command line
+1) On the command line
 ```
 git clone https://github.com/spring-projects/spring-petclinic.git
 ```
-2) Inside Eclipse
+2) Inside Eclipse or STS
 ```
 File -> Import -> Maven -> Existing Maven project
 ```
 
-Then either build on the command line `./mvnw install` or using the Eclipse launcher (right click on project and `Run As -> Maven install`) to generate the css. Run the application main method by right clicking on it and choosing `Run As -> Java Application`. Visit [http://localhost:8080](http://localhost:8080) in your browser.
+Then either build on the command line `./mvnw generate-resources` or using the Eclipse launcher (right click on project and `Run As -> Maven install`) to generate the css. Run the application main method by right clicking on it and choosing `Run As -> Java Application`.
+
+3) Inside IntelliJ IDEA
+
+In the main menu, choose `File -> Open` and select the Petclinic [pom.xml](pom.xml). Click on the `Open` button.
+
+CSS files are generated from the Maven build. You can either build them on the command line `./mvnw generate-resources`
+or right click on the `spring-petclinic` project then `Maven -> Generates sources and Update Folders`.
+
+A run configuration named `PetClinicApplication` should have been created for you if you're using a recent Ultimate
+version. Otherwise, run the application by right clicking on the `PetClinicApplication` main class and choosing
+`Run 'PetClinicApplication'`.
+
+4) Navigate to Petclinic
+
+Visit [http://localhost:8080](http://localhost:8080) in your browser.
 
 
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