Fixed the links "!#" - #1

This change is only required when you use < Angular 1.4 I believe

After cloning your repo to my computer, and running npm install and then node app.js, I cannot get the right routes without making the change "#/hotel/ to "#!/hotel/ in all the URLs in all the files. I am using your raw code, without any changes. I can see that angular@1.6.1 was downloaded, after running npm install, so I'm not running Angular 1.4.

Can also use following snippet in public/angular-app/app.js.

$locationProvider.html5Mode(true).hashPrefix('');

It even makes the URL path pretty