updated documentation
Update README.md
DEV-52886 - Remove text configuration, if text is empty
DEV-52904 - Make error messages more visible
DEV-52918 - Resize handle for text configuration
fixed initial display notice
DEV-50594 - Text is not scaled correctly after switching too smaller productType
Merge branch 'dev' of github.com:spreadshirt/rAppid.js-sprd into dev