Fix missing files and libraries

These issues were found from a clean checkout.

i18n-sample/.gitignore

@@ -1,5 +1,2 @@
 out
 node_modules
-
-// These files will be generated from the i18n folder
-*nls.*.json

i18n-sample/gulpfile.js

@@ -1,6 +1,7 @@
 // This is based off https://github.com/Microsoft/vscode/blob/master/build/gulpfile.extensions.js
 // but simplified for the single extension use-case
 
+"use strict";
 const es = require('event-stream');
 const filter = require('gulp-filter');
 const fs = require('fs');

i18n-sample/i18n/jpn/out/src/command/sayBye.i18n.json

@@ -0,0 +1,3 @@
+{
+  "sayBye.text": "こんにちは"
+}

i18n-sample/i18n/jpn/out/src/extension.i18n.json

@@ -0,0 +1,3 @@
+{
+  "sayHello.text": "こんにちは"
+}

i18n-sample/package.json

@@ -35,6 +35,7 @@
   },
   "devDependencies": {
     "@types/node": "^6.0.40",
+    "event-stream": "^3.3.4",
     "gulp": "^3.9.1",
     "gulp-filter": "^5.0.0",
     "gulp-tsb": "^2.0.3",