Updated readme

Signed-off-by: Steve Springett <steve@springett.us>

README.md

@@ -1,2 +1,12 @@
-# purl-swid-generator-ui
-A simple webapp that provides guidance on and creates Package URLs of type "swid"
+# PURL SWID Generator (UI)
+
+A simple webapp that provides guidance on and creates Package URLs of type "swid".
+
+SWID is defined in [ISO-IEC 19770-2 Software Identification (SWID) tags](https://www.iso.org/standard/65666.html) and 
+defines an XML Schema. Ironically, the SWID specification supports more than software identity, however, in the case of 
+Package URL (which is primarily an identity and location specification) the identity portions of SWID can be leveraged 
+and represented in PURL. This approach makes PURL formatted SWID more easily accessible and available to software
+consumers and systems leveraging SBOM, ITAM, and SAM.
+
+[Launch the PURL SWID Generator](https://package-url.github.io/purl-swid-generator-ui/) to learn more and generate your 
+own SWID tags that are represented in Package URL format.