set default export (#1249)

nicolaslawdune · frozeman · commit c0a4f0a5bec8 · 2018-01-11T14:17:13.000+01:00
diff --git a/packages/web3/index.d.ts b/packages/web3/index.d.ts
@@ -24,4 +24,4 @@ declare class Web3 {
   utils: t.Utils
 }
 
-export = Web3;
+export default Web3;
