Add the annotation @MavenProperty for fetching maven version id

  MavenProperty.java > Declaration of the annotation with 3 key values ( key searched, the groupId et the Artifact where is the pom wanted )

  PropertiesInjectorImpl.java > We add our new Annotation
  MavenAnnotationProcessor.java > The gear process of the annotation which is fetching into META-INF datas the version information

  FOR TESTS :
  Bean.java > we add pomVersion attribute wich contains via @MavenProperty the key version of commons-beanutils dependency
  PropertiesInjectorTest.java > We assert that the version ID is correctly fetched

  pom.xml > We upgrade to 1.1-SNAPSHOT
  README > Add of some explanations about the new @MavenProperty annotation