Adding a bunch of gulp utilities

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

gulp-replace/gulp-replace-tests.ts

@@ -0,0 +1,11 @@
+/// <reference path="./gulp-replace.d.ts"/>
+/// <reference path="../gulp/gulp.d.ts"/>
+import gulp = require("gulp");
+import replace = require("gulp-replace");
+
+gulp.task('templates', function(){
+    gulp.src(['file.txt'])
+        .pipe(replace("test", "foo"))
+        .pipe(replace(/foo(.{3})/g, '$1foo'))
+        .pipe(gulp.dest('build/file.txt'));
+});

gulp-replace/gulp-replace.d.ts

@@ -0,0 +1,17 @@
+// Type definitions for gulp-replace
+// Project: https://github.com/lazd/gulp-replace
+// Definitions by: Asana <https://asana.com>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts"/>
+
+declare module "gulp-replace" {
+    interface Options {
+        skipBinary: boolean;
+    }
+
+    function replace(pattern: string, replacement: string, opts?: Options): NodeJS.ReadWriteStream;
+    function replace(pattern: RegExp, replacement: string, opts?: Options): NodeJS.ReadWriteStream;
+
+    export = replace;
+}