#49 - readme details on chrome extension

Give example of where the recording engine will not work - for example
in recording of frames and popup windows. TagUI Chrome extension is
based on Resurrectio project, which is based on Zope recorder.

README.md

@@ -102,7 +102,9 @@ To schedule an automation flow in crontab (macOS/Linux), for example at 8am dail
 Tip - for Windows, use Task Scheduler instead (search schedule from Start Menu)
 
 ### CHROME EXTENSION
-Download from [Chrome Web Store](https://chrome.google.com/webstore/detail/tagui-web-automation/egdllmehgfgjebhlkjmcnhiocfcidnjk/) to use TagUI Chrome web browser extension for recording automation flows. TagUI Chrome extension is based on [Resurrectio tool](https://github.com/ebrehault/resurrectio) and records steps such as page navigation, clicking web elements and entering information. To start recording automation flows, click TagUI icon on your Chrome toolbar. Right-click for shortcuts to various TagUI steps, such as capturing webpage or element screenshot. The recording is not foolproof. It is meant to simplify flow creation with some edits, instead of typing everything manually. [See this video](https://www.youtube.com/watch?v=bFvsc4a8hWQ) for an example of recording sequence of steps, editing for adjustments and playing back the automation.
+Download from [Chrome Web Store](https://chrome.google.com/webstore/detail/tagui-web-automation/egdllmehgfgjebhlkjmcnhiocfcidnjk/) to use TagUI Chrome web browser extension for recording automation flows. TagUI Chrome extension is based on [Resurrectio tool](https://github.com/ebrehault/resurrectio) and records steps such as page navigation, clicking web elements and entering information. To start recording automation flows, click TagUI icon on your Chrome toolbar. Right-click for shortcuts to various TagUI steps, such as capturing webpage or element screenshot.
+
+The recording is not foolproof (for example, the underlying recording engine cannot capture frames or popup windows). It is meant to simplify flow creation with some edits, instead of typing everything manually. [See this video](https://www.youtube.com/watch?v=bFvsc4a8hWQ) for an example of recording sequence of steps, editing for adjustments and playing back the automation.
 
 ### VISUAL AUTOMATION
 TagUI has built-in integration with [Sikuli (base on OpenCV)](http://sikulix.com) to allow identifying web elements and desktop user interface elements for interaction. Steps that support visual automation are tap / click, hover / move, type / enter, select / choose. Simply specify an image filename (.png or .bmp format) of what to look for visually, in place of the element identifier, to use visual automation alongside your usual automation steps. Powerful stuff.