Add bogon information.

Author: ip2location-com

README.md

@@ -41,4 +41,15 @@ To learn more about installation, usage, and code examples, please visit the dev
 - (MOB) Mobile ISP
 - (DCH) Data Center/Web Hosting/Transit
 - (SES) Search Engine Spider
-- (RSV) Reserved
+- (RSV) Reserved
+
+
+
+### Threat Type
+
+|Threat Type|Description|
+|---|---|
+|SPAM|Email and forum spammers|
+|SCANNER|Security Scanner or Attack|
+|BOTNET|Spyware or Malware|
+|BOGON|Unassigned or illegitimate IP addresses announced via BGP|