Update README.md

Author: rowanseymour

README.md

@@ -1,19 +1,21 @@
-# phonenumbers 
+# ☎️ phonenumbers 
 [![Build Status](https://github.com/nyaruka/phonenumbers/workflows/CI/badge.svg)](https://github.com/nyaruka/phonenumbers/actions?query=workflow%3ACI) 
 [![codecov](https://codecov.io/gh/nyaruka/phonenumbers/branch/main/graph/badge.svg)](https://codecov.io/gh/nyaruka/phonenumbers)
 [![GoDoc](https://godoc.org/github.com/nyaruka/phonenumbers?status.svg)](https://godoc.org/github.com/nyaruka/phonenumbers)
 
-golang port of Google's libphonenumber, forked from [libphonenumber from ttacon](https://github.com/ttacon/libphonenumber) which in turn is a port of the original [Java library](https://github.com/googlei18n/libphonenumber/tree/master/java/libphonenumber/src/com/google/i18n/phonenumbers).
+golang port of Google's [libphonenumber](https://github.com/googlei18n/libphonenumber) forked from libphonenumber from [ttacon/libphonenumber](https://github.com/ttacon/libphonenumber). This library is used daily in production for parsing and validation of numbers across the world, so is well maintained. Please open an issue if you encounter any problems, we'll do our best to address them.
 
-This fork fixes quite a few bugs and more closely follows the official Java implementation. It also adds the `buildmetadata` cmd to allow for rebuilding the metadata protocol buffers, country code to region maps and timezone prefix maps. We keep this library up to date with the upstream Google repo as metadata changes take place, usually no more than a few days behind official Google releases.
+> [!IMPORTANT]
+> The aim of this project is strictly to be a port and match as closely as possible the functionality in libphonenumber. Please don't submit feature requests for functionality that doesn't exist in libphonenumber.
 
-This library is used daily in production for parsing and validation of numbers across the world, so is well maintained. Please open an issue if you encounter any problems, we'll do our best to address them.
+> [!IMPORTANT]
+> We use the metadata from libphonenumber so if you encounter unexpected parsing results, please first verify if the problem affects libphonenumber and report there if so. You can use their [online demo](https://libphonenumber.appspot.com) to quickly check parsing results.
 
-# Version Numbers
+## Version Numbers
 
 As we don't want to bump our major semantic version number in step with the upstream library, we use independent version numbers than the Google libphonenumber repo. The release notes will mention what version of the metadata a release was built against.
 
-# Usage
+## Usage
 
 ```go
 // parse our phone number
@@ -23,7 +25,7 @@ num, err := phonenumbers.Parse("6502530000", "US")
 formattedNum := phonenumbers.Format(num, phonenumbers.NATIONAL)
 ```
 
-# Rebuilding Metadata and Maps
+## Updating Metadata
 
 The `buildmetadata` command will fetch the latest XML file from the official Google repo and rebuild the go source files 
 containing all the territory metadata, timezone and region maps.