#31 #32 #24 - bump readme to v1.8

#31 - ask() shows the question in terminal window. This is not intuitive if automation is running on the Chrome browser and a prompt appears in terminal window to ask for user input. Raising an issue to update behaviour to show prompt in Chrome browser, if it's available. PS - similar issue exists if chrome_browser = False and visual_automation = True. The terminal may not be in the foreground during the automation flow to be visible for user inputs. However, there isn't a consistent way to show SikuliX popup with focus across platforms. Thus KIV for now.

#32 - At present, if visual automation mode is not on and `snap('page.png', 'screenshot.png')` is used, there is no error message saying that `init(visual_automation = True)` is needed to use this. Raising an issue to show error message instead of hanging waiting for SikuliX response.

#24 - readme linking to RedMart online groceries example to automate re-adding all items to cart (to reschedule delivery, need to cancel and create new order manually)

README.md

@@ -2,7 +2,7 @@
 
 # TagUI for Python
 
-[**Use Cases**](#use-cases) | [**API Reference**](#api-reference) | [**About & Credits**](#about--credits) | [**v1.7**](https://github.com/tebelorg/TagUI-Python/releases)
+[**Use Cases**](#use-cases) | [**API Reference**](#api-reference) | [**About & Credits**](#about--credits) | [**v1.8**](https://github.com/tebelorg/TagUI-Python/releases)
 
 ![TagUI for Python demo in Jupyter notebook](https://raw.githubusercontent.com/tebelorg/Tump/master/tagui_python.gif)