Add 2017 Softpedia 100% Free Award

update award list

README.md

@@ -314,6 +314,7 @@ Read about [how it all started](http://osdelivers.blackducksoftware.com/2016/06/
 
 [![Black Duck Open Source Rookie of the Year for 2015](https://raw.githubusercontent.com/Sing-Li/bbug/master/images/blackducksm.png)](https://info.blackducksoftware.com/OpenSourceRookies2015.html)
 
+[![Softpedia 100% Free and Clean Award for 2017](https://raw.githubusercontent.com/Sing-Li/bbug/master/images/softpedia.gif)](http://www.softpedia.com/get/Internet/Chat/Other-Chat-Tools/Rocket-Chat.shtml#status)
 
 ## Issues