Added the membership API for the authenticated user.

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

@@ -0,0 +1,84 @@
+package org.kohsuke.github;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.Locale;
+
+/**
+ * Represents a membership of a user in an organization.
+ *
+ * @author Kohsuke Kawaguchi
+ * @see GHMyself#listOrgMemberships()
+ */
+public class GHMembership /* extends GHObject --- but it doesn't have id, created_at, etc. */ {
+    GitHub root;
+
+    String url;
+    String state;
+    String role;
+    GHUser user;
+    GHOrganization organization;
+
+    public URL getUrl() {
+        return GitHub.parseURL(url);
+    }
+
+    public State getState() {
+        return Enum.valueOf(State.class, state.toUpperCase(Locale.ENGLISH));
+    }
+
+    public Role getRole() {
+        return Enum.valueOf(Role.class, role.toUpperCase(Locale.ENGLISH));
+    }
+
+    public GHUser getUser() {
+        return user;
+    }
+
+    public GHOrganization getOrganization() {
+        return organization;
+    }
+
+    /**
+     * Accepts a pending invitation to an organization.
+     *
+     * @see GHMyself#getMembership(GHOrganization)
+     */
+    public void activate() throws IOException {
+        root.retrieve().method("PATCH").with("state",State.ACTIVE).to(url,this);
+    }
+
+    /*package*/ GHMembership wrap(GitHub root) {
+        this.root = root;
+        if (user!=null)     user = root.getUser(user.wrapUp(root));
+        if (organization!=null) organization.wrapUp(root);
+        return this;
+    }
+
+    /*package*/ static void wrap(GHMembership[] page, GitHub root) {
+        for (GHMembership m : page)
+            m.wrap(root);
+    }
+
+    /**
+     * Role of a user in an organization.
+     */
+    public enum Role {
+        /**
+         * Organization owner.
+         */
+        ADMIN,
+        /**
+         * Non-owner organization member.
+         */
+        MEMBER;
+    }
+
+    /**
+     * Whether a role is currently active or waiting for acceptance (pending)
+     */
+    public enum State {
+        ACTIVE,
+        PENDING;
+    }
+}

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

@@ -178,6 +178,39 @@ public class GHMyself extends GHUser {
         return listRepositories();
     }
 
+    /**
+     * List your organization memberships
+     */
+    public PagedIterable<GHMembership> listOrgMemberships() {
+        return listOrgMemberships(null);
+    }
+
+    /**
+     * List your organization memberships
+     *
+     * @param state
+     *      Filter by a specific state
+     */
+    public PagedIterable<GHMembership> listOrgMemberships(final GHMembership.State state) {
+        return new PagedIterable<GHMembership>() {
+            public PagedIterator<GHMembership> _iterator(int pageSize) {
+                return new PagedIterator<GHMembership>(root.retrieve().with("state",state).asIterator("/user/memberships/orgs", GHMembership[].class, pageSize)) {
+                    @Override
+                    protected void wrapUp(GHMembership[] page) {
+                        GHMembership.wrap(page,root);
+                    }
+                };
+            }
+        };
+    }
+
+    /**
+     * Gets your membership in a specific organization.
+     */
+    public GHMembership getMembership(GHOrganization o) throws IOException {
+        return root.retrieve().to("/user/memberships/orgs/"+o.getLogin(),GHMembership.class).wrap(root);
+    }
+
 //    public void addEmails(Collection<String> emails) throws IOException {
 ////        new Requester(root,ApiVersion.V3).withCredential().to("/user/emails");
 //        root.retrieveWithAuth3()

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

@@ -214,4 +214,9 @@ public class GHUser extends GHPerson {
         if (tail.length()>0 && !tail.startsWith("/"))    tail='/'+tail;
         return "/users/" + login + tail;
     }
+
+    /*package*/ GHUser wrapUp(GitHub root) {
+        super.wrapUp(root);
+        return this;
+    }
 }

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

@@ -340,7 +340,7 @@ public class GitHub {
     /**
      * Interns the given {@link GHUser}.
      */
-    protected GHUser getUser(GHUser orig) throws IOException {
+    protected GHUser getUser(GHUser orig) {
         GHUser u = users.get(orig.getLogin());
         if (u==null) {
             orig.root = this;