refactor: Switch to promises-a-plus for cache promise definition

dist/lib/Cache.d.ts

@@ -1,5 +1,5 @@
 export interface Cache {
     set<T>(key: string, value: T): void;
-    get<T>(key: string): Thenable<T>;
+    get<T>(key: string): PromisesAPlus.Thenable<T>;
     clear(key: string): void;
 }

lib/Cache.ts

@@ -1,5 +1,5 @@
 export interface Cache {
     set<T>(key: string, value: T): void;
-    get<T>(key: string): Thenable<T>;
+    get<T>(key: string): PromisesAPlus.Thenable<T>;
     clear(key: string): void
 }

typings.json

@@ -10,7 +10,8 @@
   },
   "ambientDependencies": {
     "es6-promise": "registry:dt/es6-promise#0.0.0+20160317120654",
-    "node": "registry:dt/node#4.0.0+20160330064709"
+    "node": "registry:dt/node#4.0.0+20160330064709",
+    "promises-a-plus": "registry:dt/promises-a-plus#0.0.0+20160317120654"
   },
   "devDependencies": {
     "chai": "registry:npm/chai#3.5.0+20160402210230",

typings/main.d.ts

@@ -1,6 +1,7 @@
 /// <reference path="main/ambient/es6-promise/index.d.ts" />
 /// <reference path="main/ambient/mocha/index.d.ts" />
 /// <reference path="main/ambient/node/index.d.ts" />
+/// <reference path="main/ambient/promises-a-plus/index.d.ts" />
 /// <reference path="main/definitions/bluebird/index.d.ts" />
 /// <reference path="main/definitions/chai-as-promised/index.d.ts" />
 /// <reference path="main/definitions/chai/index.d.ts" />

typings/main/ambient/promises-a-plus/index.d.ts

@@ -0,0 +1,20 @@
+// Generated by typings
+// Source: https://raw.githubusercontent.com/DefinitelyTyped/DefinitelyTyped/7de6c3dd94feaeb21f20054b9f30d5dabc5efabd/promises-a-plus/promises-a-plus.d.ts
+// Type definitions for promises-a-plus
+// Project: http://promisesaplus.com/
+// Definitions by: Igor Oleinikov <https://github.com/Igorbek>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare namespace PromisesAPlus {
+	interface PromiseCtor {
+		<T>(resolver: (resolvePromise: (value: T) => void, rejectPromise: (reason: any) => void) => void): Thenable<T>;
+	}
+
+	interface PromiseImpl {
+		new <T>(resolver: (resolvePromise: (value: T) => void, rejectPromise: (reason: any) => void) => void): Thenable<T>;
+	}
+
+	interface Thenable<T> {
+		then<R>(onFulfill?: (value: T) => Thenable<R>|R, onReject?: (error: any) => Thenable<R>|R): Thenable<R>;
+	}
+}