KYLIN-999 add google fonts license infomation

LICENSE

@@ -229,7 +229,7 @@ MIT-like license.  For details, see
 https://raw.githubusercontent.com/kevina/wordlist/master/scowl/Copyright
 
 ==============================================================================
-For Google Fonts:
+For Google Fonts and Source Sans Pro
 ==============================================================================
 This product bundles Google Fonts:
 
@@ -239,3 +239,9 @@ that let you use them on any website, from a private blog to a big commercial si
 https://developers.google.com/fonts/faq?hl=en.
 https://www.google.com/fonts/attribution
 
+Source Sans Pro is under SIL Open Font License 1.1,
+For detail, see
+http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL
+
+
+