feat(gen): default Flow on

Author: Awk34

Diff for: src/generators/app/index.js

@@ -158,7 +158,7 @@ export class Generator extends Base {
           }, {
             type: 'confirm',
             name: 'flow',
-            default: false,
+            default: true,
             message: 'Would you like to use Flow types with Babel?',
             when: answers => answers.transpiler === 'babel'
           }, {