Add information on how to get an API token for OSS Index

Author: framayo

src/site/markdown/analyzers/oss-index-analyzer.md

@@ -8,3 +8,9 @@ identified vulnerabilities are included in the report. In addition, vulnerabilit
 found in both the NVD and OSS Index may have additional references added.
 
 This analyzer requires an Internet connection.
+
+Sonatype [announced](https://ossindex.sonatype.org/doc/auth-required) that OSS Index will require authentication.
+
+You can get an API Token following these steps:
+1. [Sign In](https://ossindex.sonatype.org/user/signin) or [Sign Up](https://ossindex.sonatype.org/user/register) for free.
+2. Get the API Token from user Settings.