added a way to cite
removed unnecessary spaces from citation
normalization: avoid division by zero for constant feature dimensions
Removing set of numpy random seed
Merge pull request #160 from slinderman/master

Removing set of numpy random seed

Great spot! We're just about to relase the next iteratino of GPy, we'll make sure it happens there too.

Thanks.
Merge pull request #148 from martinsch/normalization_fix

Normalization: avoid division by zero for constant feature dimensions
Huge merge correcting upstream master