Added lanyrd integration

I noticed that the site needs to be manually updated with dates and talks. So here is the functionality that adds lanyrd integration. 

It is missing end to end integration, but I didn't had time to go through the learning curves of coffescript + sizlate.

Since this project doesn't have tests I added a test folder :+1: . Check it and it's easy to see how to get all event data :)

```

lanyrdClient = new LanyrdClient();
lanyrdClient.getEvent("2014", "lnug-november").then(function( event ) {
       console.log(event);
}).done();
```

I added local caching so we don't get added RTT + Transfer on each http request to lnug.org

This is the payload on the event object, it can be used to directly populate the html template:
```
{
    title: 'London Node.js User Group Meetup-November2014',
    date: '2014-11-26',
    starting_hour: '6: 30pm',
    speakers: [
        {
            name: 'Brock Whitten',
            link: 'http: //twitter.com/sintaxi',
            session: 'Harpjs'
        },
        {
            name: 'George Ornbo',
            link: 'http: //twitter.com/shapeshed',
            session: 'Realtime Node.js from the trenches'
        },
        {
            name: 'Tom Cartwright',
            link: 'http: //twitter.com/tomcartwrightuk',
            session: 'Peer connect all the things'
        },
        {
            name: 'Tom Gallacher',
            link: 'http: //twitter.com/tomgco',
            session: 'Async: the battle'
        }
    ]
}
```