Enable unit tests for ArcanistJscsLinterTestCase

Summary:
https://github.com/mdevils/node-jscs/issues/444 has been resolved in commit [[0de667bac2 | 0de667bac2491ba04d930ff94e990965213ba36b]], which means that `jscs` can be easily run on files with any extension.

NOTE: JSCS version 1.5.7 is required.

Test Plan: `arc unit`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9789

src/lint/linter/__tests__/ArcanistJscsLinterTestCase.php

@@ -3,12 +3,6 @@
 final class ArcanistJscsLinterTestCase extends ArcanistArcanistLinterTestCase {
 
   public function testJscsLinter() {
-    // NOTE: JSCS will only lint files with a `*.js` extension.
-    //
-    // See https://github.com/mdevils/node-jscs/issues/444
-    $this->assertTrue(true);
-    return;
-
     $this->executeTestsInDirectory(
       dirname(__FILE__).'/jscs/',
       new ArcanistJscsLinter());

src/lint/linter/__tests__/jscs/curly-brace.lint-test

@@ -1,8 +1,8 @@
 function foo() {
-  if (true) return 'foo'; else return 'bar';
+  if (true) return "foo"; else return "bar";
 }
 ~~~~~~~~~~
-error:2:
+error:2:3
 ~~~~~~~~~~
 ~~~~~~~~~~
 {