Update README.md

README.md

@@ -4,12 +4,9 @@
 This is a project of build knowledge graph course. The project leverages historical stock price, and integrates social media listening from customers to predict market Trend On Dow Jones Industrial Average (DJIA).
 
 Data period: Aug 1, 2016 to Oct 31, 2017.
-Data Source: Business Insider, wikipedia
-Structure Data: Facebook, Yahoo Finance.
-
-
-Data Source: Reddit
-Structure Data: Twitter, 
+Data range for DJIA: Aug 1, 2016 to Nov 30, 2017.
+Data Source: Business Insider (record no.: 2,017), Reddit finance(4,383), facebook (11,528), yahoo finance(10,478), Twitter(24,271)
+Structure Data: Facebook, Twritter.
 
 ### Team members: 
 Cheng-Lin Li & YuCheng Guo