Fix ci configurations

Author: hirsch88

.travis.yml

@@ -4,7 +4,7 @@ node_js:
 install:
   - yarn install
 scripts:
-  - npm test
-  - npm run build
+  - nps test
+  - nps build
 notifications:
   email: false

appveyor.yml

@@ -6,7 +6,7 @@ install:
   - yarn install
 
 build_script:
-  - npm run build
+  - nps build
 
 test_script:
-  - npm test
+  - nps test

package.json

@@ -3,6 +3,9 @@
   "version": "2.0.0-beta.5",
   "description": "A delightful way to building a RESTful API with NodeJs & TypeScript",
   "main": "src/app.ts",
+  "engines": {
+    "node": "7.7.3"
+  },
   "scripts": {
     "start": "node dist/app.js",
     "test": "nps test",