Set version to 1.2.0.RELEASE in documentation

Author: acogoluegnes

src/docs/asciidoc/getting-started.adoc

@@ -137,7 +137,7 @@ For gradle:
 [source,groovy]
 --------
 dependencies {
-    compile "io.projectreactor.rabbitmq:reactor-rabbitmq:1.1.0.RELEASE"
+    compile "io.projectreactor.rabbitmq:reactor-rabbitmq:1.2.0.RELEASE"
 }
 --------
 
@@ -149,7 +149,7 @@ For maven:
 <dependency>
     <groupId>io.projectreactor.rabbitmq</groupId>
     <artifactId>reactor-rabbitmq</artifactId>
-    <version>1.1.0.RELEASE</version>
+    <version>1.2.0.RELEASE</version>
 </dependency>
 --------