Update test
Merge pull request #2 from RaviChotrani/patch-1

Update test
added new file
added all required files for hw1
implemented cosine ranker, phrase ranker and linear ranker. Also implemented click logging for action=render. Added a config file
merged all work except evaluator
merged all functionalities. Also added functionality to log click data
Incorporated output format. Updated click logs
organised imports and formatted code
resolved bug in avg precision.
Test git