Adding headers to the file inputs in preparation of Blob type support

app/components/file-input.js

@@ -1,5 +1,6 @@
 const FileInput = props => (
   <div>
+    <h3>{props.title}</h3>
     <input type="file" {...props} />
     <style jsx>{`
       div {

app/components/multiple-uploader.js

@@ -15,7 +15,7 @@ const MultipleUploader = ({ mutate }) => {
       }
     })
 
-  return <FileInput multiple required onChange={handleChange} />
+  return <FileInput multiple required onChange={handleChange} title={'Multiple files upload'} />
 }
 
 export default graphql(gql`

app/components/single-uploader.js

@@ -15,7 +15,7 @@ const SingleUploader = ({ mutate }) => {
       }
     })
 
-  return <FileInput required onChange={handleChange} />
+  return <FileInput required onChange={handleChange} title={'Single file upload'} />
 }
 
 export default graphql(gql`