update readme

README.md

@@ -52,6 +52,10 @@ INTERLYNK_DISABLE_VERSION_CHECK=true sbomasm assemble -n "mega cdx app" -v "1.0.
 ```sh
 docker run -v .:/app/sboms/ ghcr.io/interlynk-io/sbomasm:v0.1.3 assemble -n "assemble cdx app" -v "v2.0.0" -t "application" -o /app/sboms/final-prod.cdx.json /app/sboms/one.cdx.json /app/sboms/two.cdx.json
 ```
+`CDX` assemble multiple SBOMs and limit output cyclonedx version
+```sh
+sbomasm assemble -n "mega cdx app" -v "1.0.0" -t "application" -e 1.4 -o final-product.cdx.json sbom1.json sbom2.json sbom3.json
+```
 
 # Features
 - SBOM format agnostic