add save fn

index.js

@@ -10,5 +10,13 @@ class BlindReplicator extends Base {
     this._initFeeds(opts)
     this._readyCallback = this.multifeed.ready.bind(this.multifeed)
   }
+
+  save () {
+    this.config.replicators.set(this.address, {
+      address: this.address,
+      name: this.name
+    })
+    return this.config.save()
+  }
 }
 

test/mock.js

@@ -0,0 +1,22 @@
+const maybe = require('call-me-maybe')
+const crypto = require('cobox-crypto')
+
+module.exports = (storage, address, opts) => new BlindReplicator(storage, address, opts)
+
+class BlindReplicator {
+  constructor (storage, address, opts = {}) {
+    this.address = address
+    this.discoveryKey = crypto.randomBytes(32)
+    this.name = opts.name
+  }
+
+  ready (callback) {
+    return maybe(callback, new Promise((resolve, reject) => {
+      resolve(true)
+    }))
+  }
+
+  save () {
+    return true
+  }
+}