add project description (#461)

pom.xml

@@ -11,6 +11,7 @@
   <version>999-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Quarkus - Quinoa - Parent</name>
+   <description>Quinoa is a Quarkus extension which eases the development, the build and serving of single page apps or web components alongside Quarkus. It is possible to use it with a Quarkus backend in a single project.</description>
   <modules>
     <module>deployment-testing</module>
     <module>deployment</module>