update READEME

Author: meirwah

README.md

@@ -3,5 +3,5 @@ A collection of demisto tools
 
 ### Phishing
 Creates an incident on Demisto server for phishing scenario
-```./phishing -attachment Invoice.doc -body phishing_body.html -u aviad -p 1q2w3e4r -s https://localhost:8443 ```
+```./phishing -attachment Invoice.doc -body phishing_body.html -u ${user} -p ${pass} -s https://localhost:8443 ```