Added info about the new plugin portal; fixes gh-1054

docs/src/main/asciidoc/gradle-project.adoc

@@ -34,7 +34,8 @@ documnetation for more information]
 To add a Gradle plugin with dependencies, you can use code similar to the following:
 
 ====
-[source,groovy,indent=0]
+[source,groovy,indent=0,subs="verbatim,attributes",role="primary"]
+.Plugin DSL
 ----
 buildscript {
 	repositories {
@@ -55,6 +56,39 @@ dependencyManagement {
 	}
 }
 
+dependencies {
+	testCompile "org.codehaus.groovy:groovy-all:${groovyVersion}"
+	// example with adding Spock core and Spock Spring
+	testCompile "org.spockframework:spock-core:${spockVersion}"
+	testCompile "org.spockframework:spock-spring:${spockVersion}"
+	testCompile 'org.springframework.cloud:spring-cloud-starter-contract-verifier'
+}
+----
+
+[source,groovy,indent=0,subs="verbatim,attributes",role="secondary"]
+.Legacy Plugin Application
+----
+buildscript {
+	repositories {
+		mavenCentral()
+	}
+	dependencies {
+		classpath "org.springframework.boot:spring-boot-gradle-plugin:${springboot_version}"
+	}
+}
+
+apply plugin: 'groovy'
+
+plugins {
+  id "org.springframework.cloud.contract" version "${GAVerifierVersion}"
+}
+
+dependencyManagement {
+	imports {
+		mavenBom "org.springframework.cloud:spring-cloud-contract-dependencies:${verifier_version}"
+	}
+}
+
 dependencies {
 	testCompile "org.codehaus.groovy:groovy-all:${groovyVersion}"
 	// example with adding Spock core and Spock Spring
@@ -65,6 +99,8 @@ dependencies {
 ----
 ====
 
+IMPORTANT: The Plugin DSL option will only work for GA (General Availability) releases (i.e. `2.2.0.RELEASE` etc.).
+
 [[gradle-and-rest-assured]]
 == Gradle and Rest Assured 2.0