use boa.exe for windows

Author: jasonwilliams

src/engines/boa.js

@@ -8,6 +8,8 @@ const { copyFileSync, chmodSync, existsSync, mkdirSync } = require('fs');
 const Installer = require('../installer');
 const { platform } = require('../common');
 
+const binaryName = platform.startsWith('win') ? 'boa.exe' : 'boa';
+
 function getFilename() {
   switch (platform) {
     case 'darwin-x64':
@@ -48,11 +50,11 @@ class BoaInstaller extends Installer {
     if (!existsSync(this.extractedPath)) {
       mkdirSync(this.extractedPath);
     }
-    return copyFileSync(this.downloadPath, join(this.extractedPath, 'boa'));
+    return copyFileSync(this.downloadPath, join(this.extractedPath, binaryName));
   }
 
   async install() {
-    this.binPath = await this.registerBinary('boa');
+    this.binPath = await this.registerBinary(binaryName);
   }
 
   async test() {