Update es6-promise to version 1.0.x and lock it there.

Also fix `cast` being replaced by `resolve`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "capnp",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "A wrapper for the C++ Cap'n Proto library",
   "keywords": [ "capnproto", "serialization" ],
   "homepage": "http://capnproto.org",
@@ -18,7 +18,7 @@
 
   "main": "src/node-capnp/capnp.js",
   "dependencies": {
-    "es6-promise": ">=0.1.1"
+    "es6-promise": "1.0.x"
   },
   "scripts": {
     "install": "node ./build.js",

src/node-capnp/capnp.js

@@ -147,7 +147,7 @@ function wrapLocalMethod(self, method) {
   return function (request) {
     var params = v8capnp.toJsParams(request, Capability);
     v8capnp.releaseParams(request);
-    Promise.cast(method.apply(self, params)).then(function (results) {
+    Promise.resolve(method.apply(self, params)).then(function (results) {
       if (typeof results !== "object") {
         if (results === undefined) {
           results = [];