added code to create a new issue

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

@@ -0,0 +1,29 @@
+package org.kohsuke.github;
+
+import java.io.IOException;
+
+/**
+ * @author Kohsuke Kawaguchi
+ */
+public class GHIssueBuilder {
+    private final GHRepository repo;
+    private final Requester builder;
+
+    GHIssueBuilder(GHRepository repo, String title) {
+        this.repo = repo;
+        this.builder = new Requester(repo.root);
+        builder.with("title",title);
+    }
+
+    public GHIssueBuilder body(String str) {
+        builder.with("body",str);
+        return this;
+    }
+
+    /**
+     * Creates a new issue.
+     */
+    public GHIssue create() throws IOException {
+        return builder.to("/repos/"+repo.getOwnerName()+'/'+repo.getName()+"/issues",GHIssue.class).wrap(repo);
+    }
+}