Add count property and DRY

lib/contracts/record.js

@@ -0,0 +1,14 @@
+const Base = require('./base');
+const paged = require('../utils/pagination');
+
+class Record extends Base {
+  all(options = {}) {
+    return this.count
+      .then((count) => {
+        let records = paged(count, options).map((id) => this.getById(id));
+        return Promise.all(records);
+      });
+  }
+}
+
+module.exports = Record