renamed data files
updated data files

*distances are calculated more accurately now
*metadata now conatins an image url
getting nearest beers gets all relationships now

This is how out relationship table looks like:
(a dot represents a pairing we have data for)
`
 123456
1 .....
2  ....
3   ...
4    ..
5     .
6
`

we were only looking at the horizontal for relationships. now we check
the horizontal as well as the vertical
Merge pull request #51 from BorisVerk/master

updated data files