Fix: respect editorconfig (#92)

Fixes #90

https://prettier.io/docs/en/api.html#prettierresolveconfigfilepath-options

Author: azz

eslint-plugin-prettier.js

@@ -398,7 +398,9 @@ module.exports = {
               usePrettierrc &&
               prettier.resolveConfig &&
               prettier.resolveConfig.sync
-                ? prettier.resolveConfig.sync(context.getFilename())
+                ? prettier.resolveConfig.sync(context.getFilename(), {
+                    editorconfig: true
+                  })
                 : null;
             const prettierOptions = Object.assign(
               {},