Update examples/dashboard/feed.py
Update examples/dashboard/feed.py

Update the example to point to the updated leftronic URL for pushing data.  
kkirsche/splunk-sdk-python,splunk/splunk-sdk-python,lowtalker/splunk-sdk-python,kkirsche/splunk-sdk-python,kkirsche/splunk-sdk-python,ww9rivers/splunk-sdk-python,splunk/splunk-sdk-python,kkirsche/splunk-sdk-python,sullivanmatt/splunk-sdk-python