docs: update readme

README.md

@@ -1 +1,30 @@
-# afj-polygon-w3c-module
+# Credo did:polygon W3C Module
+
+- W3C did:polygon method registry for [credo-ts](https://github.com/openwallet-foundation/credo-ts).
+
+## Usage
+
+```ts
+import { PolygonDidResolver, PolygonDidRegistrar, PolygonModule } from 'afj-polygon-w3c-module'
+
+const agent = new Agent({
+  config: {
+    /* agent config */
+  },
+  dependencies,
+  modules: {
+    /* ... */
+    dids: new DidsModule({
+      resolvers: [ /* ... */, new PolygonDidResolver()],
+      registrars: [ /* ... */, new PolygonDidRegistrar()],
+    }),
+    /* ... */
+    polygon: new PolygonModule({
+      rpcUrl: 'rpcUrl' // polygon rpc url,
+      didContractAddress: 'didContractAddress' // polygon did contract address,
+      fileServerToken: 'fileServerToken' // polygon file server token to store schema json,
+      schemaManagerContractAddress: 'schemaManagerContractAddress' // polygon schema manager contract address,
+      serverUrl: 'serverUrl' // polygon file server url,
+    }),
+})
+```

src/dids/didPolygonUtil.ts

@@ -1,8 +1,9 @@
 import type { DidCreateResult, DidDocument } from '@aries-framework/core'
 
-import { VERIFICATION_METHOD_TYPE_ECDSA_SECP256K1_VERIFICATION_KEY_2019 } from '@aries-framework/core'
 import { computeAddress } from 'ethers'
 
+export const VERIFICATION_METHOD_TYPE_ECDSA_SECP256K1_VERIFICATION_KEY_2019 = 'EcdsaSecp256k1VerificationKey2019'
+
 export const polygonDidRegex = new RegExp(/^did:polygon(:testnet)?:0x[0-9a-fA-F]{40}$/)
 
 export const isValidPolygonDid = (did: string) => polygonDidRegex.test(did)