update readme to describe gradle activities

Author: MysterAitch

README.md

@@ -1,20 +1,25 @@
-JavaParser and Maven sample
+JavaParser and Gradle sample
 ---
 
-A fully working sample Maven project that parses and generates code with [JavaParser](http://www.javaparser.org)
+A fully working sample Gradle project that parses and generates code with [JavaParser](http://www.javaparser.org)
 
-This is targeted at people without [Maven](https://maven.apache.org/) experience.
+This is targeted at people without [Gradle](https://gradle.org/) experience.
+
+To build it, you will need to download and unpack the latest (or recent) version of Gradle (https://gradle.org/install/)
+and put the `gradle` command on your path. Alternatively, you can use the (included) gradle wrapper.
 
-To build it, you will need to download and unpack the latest (or recent) version of Maven (https://maven.apache.org/download.cgi)
-and put the `mvn` command on your path.
 Then, you will need to install a Java 1.8 (or higher) JDK (not JRE!), and make sure you can run `java` from the command line.
-Now you can run `mvn clean install` and Maven will compile your project, 
-an put the results it in two jar files in the `target` directory.
-If you like to run from the command line,
-execute `java -jar target/javaparser-maven-sample-1.0-SNAPSHOT-shaded.jar`.
 
-How you run this code is up to you, but usually you would start by using an IDE like [NetBeans](https://netbeans.org/), [Intellij IDEA](https://www.jetbrains.com/idea/), or [Eclipse](https://eclipse.org/ide/).
+Now you can run `gradle shadowJar` - Gradle will compile your project and put the
+ resulting jar file in the `build` directory.
+
+If you like to run from the command line, execute 
+`java -jar build/libs/javaparser-gradle-sample-shadow-1.0-SNAPSHOT-beta.jar`.
+
+How you run this code is up to you, but usually you would start by using an IDE 
+like [NetBeans](https://netbeans.org/), [Intellij IDEA](https://www.jetbrains.com/idea/), 
+or [Eclipse](https://eclipse.org/ide/).
 
-The Maven dependencies may lag behind the official releases a bit.
+Note that the JavaParser dependencies may lag behind the official releases a bit.
 
 If you notice some problems with this setup, please open an issue.