Adds GitLab remote link support

Adds Bitbucket remote link support
Adds Visual Studio Team Services remote link support

src/git/remotes/visualStudio.ts

@@ -0,0 +1,27 @@
+'use strict';
+import { RemoteProvider } from './provider';
+
+export class VisualStudioService extends RemoteProvider {
+
+    constructor(public domain: string, public path: string) {
+        super(domain, path);
+    }
+
+    get name() {
+        return 'Visual Studio Team Services';
+    }
+
+    protected getUrlForBranch(branch: string): string {
+        return `${this.baseUrl}/?version=GB${branch}&_a=history`;
+    }
+
+    protected getUrlForCommit(sha: string): string {
+        return `${this.baseUrl}/commit/${sha}`;
+    }
+
+    protected getUrlForFile(fileName: string, branch?: string, sha?: string): string {
+        if (sha) return `${this.baseUrl}/commit/${sha}/?_a=contents&path=%2F${fileName}`;
+        if (branch) return `${this.baseUrl}/?path=%2F${fileName}&version=GB${branch}&_a=contents`;
+        return `${this.baseUrl}?path=%2F${fileName}`;
+    }
+}