Better hint at the package capabilities in readme

Author: tecosaur

README.md

@@ -8,3 +8,14 @@
 The `StyledStrings` package builds on top of the `AnnotatedString` type to
 provide a full-fledged textual styling system, suitable for terminal and
 graphical displays.
+
+This is primarily intended for package authors, who may think of this as
+`printstyled` on a (rather potent) steroids 😉. To get a better sense of what
+this means in practice, start with the [examples
+page](https://julialang.github.io/StyledStrings.jl/dev/examples/) of the
+documentation and look for how other packages use `StyledStrings` in the Julia
+ecosystem.
+
+This is a standard library as of Julia 1.11. A version compatible with Julia 1.0
+through to 1.10 has also been registered in General — allowing `StyledStrings`
+to be used anywhere without compromising compatibility.