added an operation to retrieve repositories from a team.

src/main/java/org/kohsuke/github/GHPerson.java

@@ -31,10 +31,7 @@ public abstract class GHPerson {
     public synchronized Map<String,GHRepository> getRepositories() throws IOException {
         if (repositories==null) {
             repositories = Collections.synchronizedMap(new TreeMap<String, GHRepository>());
-            for (GHRepository r : root.retrieve("/repos/show/" + login, JsonRepositories.class).repositories) {
-                r.root = root;
-                repositories.put(r.getName(),r);
-            }
+            repositories.putAll(root.retrieve("/repos/show/" + login, JsonRepositories.class).wrap(root));
         }
 
         return Collections.unmodifiableMap(repositories);

src/main/java/org/kohsuke/github/GHTeam.java

@@ -1,6 +1,7 @@
 package org.kohsuke.github;
 
 import java.io.IOException;
+import java.util.Map;
 import java.util.Set;
 
 /**
@@ -33,6 +34,10 @@ public class GHTeam {
         return org.root.retrieveWithAuth(api("/members"),JsonUsersWithDetails.class).toSet(org.root);
     }
 
+    public Map<String,GHRepository> getRepositories() throws IOException {
+        return org.root.retrieveWithAuth(api("/repositories"),JsonRepositories.class).wrap(org.root);
+    }
+
     /**
      * Adds a member to the team.
      */

src/main/java/org/kohsuke/github/JsonRepositories.java

@@ -24,10 +24,21 @@
 package org.kohsuke.github;
 
 import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
 
 /**
  * @author Kohsuke Kawaguchi
  */
 class JsonRepositories {
     public List<GHRepository> repositories;
+
+    public Map<String,GHRepository> wrap(GitHub root) {
+        Map<String,GHRepository> map = new TreeMap<String, GHRepository>();
+        for (GHRepository r : repositories) {
+            r.root = root;
+            map.put(r.getName(),r);
+        }
+        return map;
+    }
 }