fix(deps): include tslint

if you're on npm 3+, it won't be automatically installed with gulp-tslint

Author: Awk34

app/templates/_package.json

@@ -161,7 +161,8 @@
     "requirejs": "~2.1.11",
     "phantomjs-prebuilt": "^2.1.4",
     "proxyquire": "^1.0.1",
-    "supertest": "^1.1.0"
+    "supertest": "^1.1.0"<% if(filters.ts) { %>,
+    "tslint": "^3.5.0"<% } %>
   },
   "engines": {
     "node": "^4.2.3",