now reading tsOptions from tsConfig and supporting declaration file handling

test/assets/dist/index.d.ts

@@ -0,0 +1,4 @@
+/// <reference path="typings/main.d.ts" />
+declare let testplugin: {
+    logSomething: () => void;
+};

test/assets/npmts.json

@@ -3,7 +3,9 @@
   "ts":{
     "./customdir/*.ts":"./"
   },
-  "tsconfig":true,
+  "tsOptions":{
+    "target":"ES5"
+  },
   "typings":[
     "./ts/typings.json",
     "./subts1/typings.json",

test/assets/test/test.d.ts

@@ -0,0 +1,2 @@
+/// <reference path="../ts/typings/main.d.ts" />
+declare var testplugin: any;