fix: add .gitattributes to help with line endings, reducing Windows issues

As recommended by Prettier.
Fixes #39

Author: haoqunjiang

Diff for: index.js

@@ -125,6 +125,14 @@ export default function createConfig({
     )
   }
 
+  if (styleGuide !== 'standard' || needsPrettier) {
+    // TODO:
+    // I used renderEjsFile instead of readFileSync for simplicity and easier integration
+    // with create-vue. But it's ugly.
+    // Should refactor later, or move this project into create-vue.
+    files['.gitattributes'] = renderEjsFile('./templates/_gitattributes', {})
+  }
+
   return {
     pkg,
     files,

Diff for: templates/_gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf