Add Bandits to moe examples

********* PEOPLE *************
Primary reviewer: @sc932 

Reviewers: @suntzu86 

********* DESCRIPTION **************
Branch Name: norases_386_add_bandits_to_moe_examples
Ticket(s)/Issue(s): #386   

********* TESTING DONE *************
make test
make style-test
Is there a more interesting and reasonably canonical case we can use or optionally use?

pwais has this networking dataset: https://github.com/pwais/bandit_policy_simulator/tree/master/datasets/univ-latencies