Respect ruby.pathToBundler for RuboCop executable

src/format/RuboCop.ts

@@ -35,14 +35,15 @@ export class AutoCorrect {
 
 	// What's the exe name for rubocop?
 	get exe(): string[] {
-		const opts:any = this.opts;
+		const opts: any = this.opts;
 		if (opts.exe) {
 			return [opts.exe];
 		}
 
 		const ext: string = process.platform === 'win32' ? '.bat' : '';
 		if (vscode.workspace.getConfiguration('ruby').useBundler) {
-			return [`bundle${ext}`, 'exec', 'rubocop'];
+			let pathToBundler = vscode.workspace.getConfiguration('ruby').pathToBundler || 'bundle';
+			return [`${pathToBundler}${ext}`, 'exec', 'rubocop'];
 		}
 
 		return [`rubocop${ext}`];
@@ -88,16 +89,17 @@ export class AutoCorrect {
 
 	private spawn = (args: string[], options?: cp.SpawnOptions): cp.ChildProcess => {
 		const exe: string[] = this.exe;
-		const spawnOpt: cp.SpawnOptions = options ? options : {}
+		const spawnOpt: cp.SpawnOptions = options ? options : {};
 
-		if (!spawnOpt.cwd) { spawnOpt.cwd = vscode.workspace.rootPath }
+		if (!spawnOpt.cwd) {
+			spawnOpt.cwd = vscode.workspace.rootPath;
+		}
 
 		return cp.spawn(exe.shift(), exe.concat(args), spawnOpt);
 	};
 
 	public test(): Promise<any> {
 		return new Promise((resolve, reject) => {
-
 			const rubo = this.spawn(['-v']);
 
 			rubo.on('error', err => {