depreciate the methods Plugin.getKey(), getName() and getDescription()

sonar-plugin-api/src/main/java/org/sonar/api/Plugin.java

 
   /**
    * Unique key within sonar plugins
+   * @deprecated since 2.2. The key must be set in the manifest.
    */
+  @Deprecated
   String getKey();
 
   /**
    * Descriptive name
+   * @deprecated since 2.2. The name must be set in the manifest.
    */
+  @Deprecated
   String getName();
 
   /**
    * description of the plugin, can contains html or ruby code
+   * @deprecated since 2.2. The description must be set in the manifest.
    */
+  @Deprecated
   String getDescription();
 
   /**

sonar-plugin-api/src/main/java/org/sonar/api/rules/AnnotationRuleRepository.java

  * License along with Sonar; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
  */
-
 package org.sonar.api.rules;
 
 import com.google.common.collect.Lists;
   private Collection<Class> annotatedClasses;
 
   /**
-   * Use the factory method()
+   * Use the factory method create()
    */
   private AnnotationRuleRepository(String key, String language, Collection<Class> annotatedClasses) {
     super(key, language);