actualized readme

README.md

@@ -1,21 +1,10 @@
+[![Build Status](https://semaphoreci.com/api/v1/ihorkatkov/apollo-absinthe-upload-link/branches/master/badge.svg)](https://semaphoreci.com/ihorkatkov/apollo-absinthe-upload-link)
+
 # Apollo-Absinthe-Upload-Link
 
 A network interface for Apollo that enables file-uploading to Absinthe back
 ends.
 
-## Difference between `apollo-absinthe-upload-client` and `apollo-absinthe-upload-link`
-[`apollo-absinthe-upload-client`](https://github.com/labtwentyfive/apollo-absinthe-upload-client)
-was developed for first version of Apollo Client and it can't be used with second
-version. This package was rewritten specifically for second version which supports
-new middleware and link ibterface 
-
-## Difference between `apollo-upload-client` and `apollo-absinthe-upload-client`
-
-Both Apollo, through
-[`apollo-upload-server`](https://github.com/jaydenseric/apollo-upload-server),
-and Absinthe support file-uploads through GraphQL-mutations, unfortunately, they
-differ in their protocol.
-
 ## Usage
 
 Install via yarn or npm and then use `createLink` from the package
@@ -32,13 +21,27 @@ const client = new ApolloClient({
 });
 ```
 
-### Usage with React Native
+### Custom headers
 
-Not tested. Contributing is welcome.
+Custom headers can be passed through options of the link. 
 
-### Optional dependencies
+```js
+import ApolloClient from "apollo-client";
+import { createLink } from "apollo-absinthe-upload-link";
 
-This library uses `fetch`, if you target older browsers you can polyfill both.
+const headers = { authorization: 1234 } 
+const client = new ApolloClient({
+    link: createLink({
+        uri: "/graphql"
+    }),
+    headers,
+});
+```
+
+
+### Usage with React Native
+
+Not tested. Contributing is welcome.
 
 ## License