Updated RequireJS def to handle error callbacks

Updated RequireJS definition to support error callbacks.
In addition it exposes a RequireError interface, with the potential values of the param passed to the error callback.
Also added overload for require(module : string), so that require can potentially be used inline mod.

requirejs/require-2.1.d.ts

@@ -132,8 +132,8 @@ interface Require {
 	// Start the main app logic.
 	// Callback is optional.
 	// Can alternatively use deps and callback.
-	(modules: string[]): void;
-	(modules: string[], ready: (...modules: any[]) => void): void;
+	(module: string): any;
+	(modules: string[], ready?: (...modules: any[]) => void, errorCallback?: (err : RequireError) => void): void;
 
 	// Generate URLs from require module
 	toUrl(module: string): string;
@@ -148,6 +148,15 @@ interface Require {
 	onResourceLoad(context: Object, map: RequireMap, depArray: RequireMap[]): void;
 }
 
+interface RequireError
+{
+	requireType: string;
+	requireModules: string[];
+	originalError?: string;
+	contextName? : string;
+	requireMap?: any;
+}
+
 interface RequireDefine {
 
 	/**
@@ -194,4 +203,4 @@ interface RequireDefine {
 
 // Ambient declarations for 'require' and 'define'
 var require: Require;
-var define: RequireDefine;
+var define: RequireDefine;