Added requirements to the build section of README.md

README.md

@@ -120,9 +120,12 @@ You can access snapshot builds from the sonatype snapshot repository by adding t
 ```
 
 ## Build
-In order to build spring-boot-admin you need to have node.js and npm on your `$PATH`.
+**Requirements:**
+* [Node.js v8.x (LTS)](https://nodejs.org/en/download/)
+* JDK >= 1.8
+
+Please make sure you set `$JAVA_HOME` points to the correct JDK and that the `node` and `npm` commands are on your `$PATH`.
 
 ```shell
 ./mvnw clean package
 ```
-