ethr-did + did-jwt-vc test

This sample project uses a did:ethr identifier to sign a JWT verifiable credential.

npm install

Attempt to reproduce ethr-did issue #110

npm run build && node lib/ethr-110.js
# or
npm run ethr-110

Attempt to reproduce did-jwt issue #275

npm run build && node lib/didjwt-275.js
# or
npm run didjwt-275