Adding a bunch of gulp utilities

This should allow a developer to write a gulpfile in TypeScript to
compile a TypeScript project.

gulp-gh-pages/gulp-gh-pages-tests.ts

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+/// <reference path="./gulp-gh-pages.d.ts"/>
+/// <reference path="../gulp/gulp.d.ts"/>
+import gulp = require("gulp");
+import ghPages = require("gulp-gh-pages");
+
+gulp.src("test.css")
+    .pipe(ghPages());
+
+gulp.src("test.css")
+    .pipe(ghPages({remoteUrl: "https://github.com/Asana/DefinitelyTyped.git"}));
+
+gulp.src("test.css")
+    .pipe(ghPages({origin: "origin"}));
+
+gulp.src("test.css")
+    .pipe(ghPages({branch: "master"}));
+
+gulp.src("test.css")
+    .pipe(ghPages({cacheDir: "/tmp"}));
+
+gulp.src("test.css")
+    .pipe(ghPages({push: false}));
+
+gulp.src("test.css")
+    .pipe(ghPages({message: "master"}));

gulp-gh-pages/gulp-gh-pages.d.ts

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+// Type definitions for gulp-gh-pages
+// Project: https://github.com/rowoot/gulp-gh-pages
+// Definitions by: Asana <https://asana.com>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts"/>
+
+declare module "gulp-gh-pages" {
+    interface Options {
+        remoteUrl?: string;
+        origin?: string;
+        branch?: string;
+        cacheDir?: string;
+        push?: boolean;
+        message?: string;
+    }
+
+    function ghPages(opts?: Options): NodeJS.ReadWriteStream;
+
+    export = ghPages;
+}