chore: add tag step

Author: hazcod

README.md

@@ -5,8 +5,9 @@ Nags users on Slack about outstanding application vulnerabilities found by Crowd
 
 ## Instructions
 
-1. Download a release of csn
-2. Create a configuration file
+1. Tag your Falcon hosts with `email/user/company.com` if their email is `[email protected]`.
+2. Download a release of csn
+3. Create a configuration file
 
 ```yaml
 slack:
@@ -41,5 +42,5 @@ message: |
   Please update them as soon as possible. In case of any issues, hop into *#security*.
   Thank you! :wave:
 ```
-3. Run `csn -config=your-config.yml`.
-4. See it popup in Slack!
+4. Run `csn -config=your-config.yml`.
+5. See it popup in Slack!