Added test example.

examples/test/build.gradle

@@ -0,0 +1,33 @@
+plugins {
+    id 'java'
+    id 'application'
+    id 'com.github.ben-manes.versions' version '0.21.0'
+}
+
+// ./gradlew run
+// ./gradlew runExample
+
+defaultTasks 'run'
+
+final def semverProcessor = 'net.thauvin.erik:semver:1.2.0'
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+compileJava.options.annotationProcessorGeneratedSourcesDirectory = file("${projectDir}/src/generated/java")
+
+mainClassName = 'com.example.Example'
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+dependencies {
+    annotationProcessor semverProcessor
+    implementation semverProcessor
+}
+
+tasks.withType(JavaCompile) {
+  options.compilerArgs += [ "-Asemver.project.dir=${projectDir}/example" ]
+}