Update README.md

README.md

@@ -1,9 +1,12 @@
-xgboost
-
-eXtreme Gradient Boosting Library 
+xgboost: eXtreme Gradient Boosting 
 =======
+An efficient general purpose gradient boosting (tree) library.
+
 Creater: Tianqi Chen
  
+Documentation: https://github.com/tqchen/xgboost/wiki
+ 
+
 Features
 =======
 * Sparse feature format:
@@ -30,4 +33,3 @@ File extension convention:
 (2) .cpp are implementations that will be compiled, with less comment; 
 (3) .hpp are implementations that will be included by .cpp, with less comment
 
-See also: https://github.com/tqchen/xgboost/wiki