Fixes #1 Allow for multiple artifacts

src/ArtifactUploader.ts

@@ -0,0 +1,24 @@
+import { Artifact } from "./Artifact";
+import { Releases } from "./Releases";
+
+export interface ArtifactUploader {
+    uploadArtifacts(artifacts: Artifact[], uploadUrl: string): void
+}
+
+export class GithubArtifactUploader implements ArtifactUploader {
+    private releases: Releases
+
+    constructor(releases: Releases) {
+        this.releases = releases
+    }
+
+    async uploadArtifacts(artifacts: Artifact[], uploadUrl: string) {
+        artifacts.forEach(async artifact => {
+            await this.releases.uploadArtifact(uploadUrl,
+                artifact.contentLength,
+                artifact.contentType,
+                artifact.readFile(),
+                artifact.name)
+        });
+    }
+}