Update lshash.py

On the following quick test, I didn't have any extra data.
I had to remove the "[0]" to get the proper result.

import lsh
lsh = lshash.LSHash(hash_size=6,input_dim=8,storage_config={"redis":{"host":"127.0.0.1","port":6380}})
lsh.index([1,2,3,4,5,6,7,8])
lsh.index([2,3,4,5,6,7,8,9])
print lsh.query([1,2,3,4,5,6,7,7])