Dev - Added borders informations 

As discussed in https://github.com/fayder/restcountries/issues/16 I've searched the borders informations of the countries in the list. According to http://en.wikipedia.org/wiki/List_of_countries_and_territories_by_land_borders the countries with no borders informations have this object in their JSON string:

```
"borders":[]
```
About Cyprus, according to the link, I've added Great Britain CCA3 as border countrie.

All the countries of your list have been checked.

Bye,
Andrea