Improved final handler and fixed mocha execution

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 *.log
 .DS_Store
+package-lock.json

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 before_install:
-  - npm install -g npm@latest
   - npm install booljs@latest
 node_js:
-  - 7.0
+  - lts/*

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/BoolJS/booljs-express.svg?branch=master)](https://travis-ci.org/BoolJS/booljs-express) [![Dependencies status for bool.js](https://david-dm.org/booljs/booljs-express.svg)](https://david-dm.org/booljs/booljs-express) [![devDependency Status](https://david-dm.org/booljs/booljs-express/dev-status.svg)](https://david-dm.org/booljs/booljs-express#info=devDependencies) [![Code Climate](https://codeclimate.com/github/BoolJS/booljs-express/badges/gpa.svg)](https://codeclimate.com/github/BoolJS/booljs-express) [![Inline docs](http://inch-ci.org/github/booljs/booljs-express.svg?branch=master)](http://inch-ci.org/github/booljs/booljs-express)
 
-[![Bool.js NPM icon](https://nodei.co/npm/booljs-express.png)](https://npmjs.com/packages/booljs-express)
+[![Bool.js NPM icon](https://nodei.co/npm/booljs.express.png)](https://npmjs.com/packages/booljs.express)
 
 [![Join the chat at https://gitter.im/BoolJS/booljs-express](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/BoolJS/booljs-express?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 

lib/server/router/handlers.js

@@ -3,10 +3,18 @@
 module.exports = function ({ Error, views: { Json } }, router) {
     let json = new Json();
 
-    // 404 Handler. Acts when a resource call isn't found
-    router.use((request, response) => json.error(
-        new Error(404, 'method_not_found', 'Method wasn\'t found'), response
-    ));
+    // Final handler. Acts when a resource call isn't found
+    router.use((request, response) => {
+        const notImplementedError = new Error(501,
+            'not_implemented', 'Method haven\'t been implemented yet');
+        if (response.headersSent === false) {
+            if (request.path === '/' && request.method === 'GET') {
+                json.standard('Welcome to API!', response);
+            } else {
+                json.error(notImplementedError, response);
+            }
+        }
+    });
 
     // Error Handler. Processes an error output view.
     router.use((error, req, response, next) => json.error(error, response));