Update README.md
new lambda rank interface
Impement new Lambda rank interface
Download data set from web site
small change
use ndcg@all in lambdarank for ndcg
speedtest
new speed test
minor changes
chng few things
Merge branch 'dev' of ssh://github.com/tqchen/xgboost into dev
chg rank demo
cleanup
chg scripts
pre-release version
chg all settings to obj
chgs
Update demo.py
add bing to author list
fix small bug