improve readme

README.md

@@ -22,6 +22,17 @@ Then use it in package.json's script section to trigger a build:
 by default npmts looks for `./ts/index.ts` and `./ts/test.ts` that will compile to
 `./index.js` and `./test.js`
 
+npmts also creates a index.d.ts declaration file.
+You can reference it in your package.json like this:
+
+```json
+"main": "index.js",
+"typings": "./index.d.ts",
+```
+
+When requiring the module from other TypeScript files,
+the TypeScript Compiler will use the declaration file to resolve typings.
+
 #### Declaration files
 
 ### Custom behaviour

package.json

@@ -3,8 +3,9 @@
   "version": "1.0.4",
   "description": "write npm modules with TypeScript",
   "main": "index.js",
+  "typings": "./index.d.ts",
   "bin": {
-    "npmts": "index.js"
+    "npmts": "./index.js"
   },
   "scripts": {
     "test": "(cd compile && node compile.js)",

test/index.js

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 (function () {
     console.log("test");
 }());