How to fully uninstall Razer Synapse on OS X El Capitan without using Razer's official uninstall tool

uninstall-razer-synapse.sh

# How to uninstall Razer Synapse ( http://www.razerzone.com/synapse/ )
# on OS X El Capitan without using Razer's official uninstall tool.
# Tested on OS X 10.11.5 in July 2016.

# Step 1: In your terminal: stop and remove launch agents
launchctl remove com.razer.rzupdater
launchctl remove com.razerzone.rzdeviceengine
sudo rm /Library/LaunchAgents/com.razer.rzupdater.plist
sudo rm /Library/LaunchAgents/com.razerzone.rzdeviceengine.plist

# Step 2: Remove HID kernel extension
sudo rm -Rf /System/Library/Extensions/RazerHid.kext

# Step 3: Manually delete Razer Synapse app from Applications in Finder

# Step 4: Delete Razer files from "Application Support" folders:
sudo rm -rf /Library/Application\ Support/Razer/
rm -rf ~/Library/Application\ Support/Razer/

# Step 5: Restart your Mac.
# Expected results:
# - The Razer icon should be gone from the OS X menu bar now, and also not pop up sporadically either
# - The two processes "RzDeviceEngine" and "RzUpdater" should not be running when you check ActivityMonitor