Fixes NaN accept/submit numbers.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/leetcode_client.js

@@ -153,7 +153,7 @@ leetcodeClient.getProblem = function(user, problem, cb) {
     if (e) return cb(e);
 
     var $ = cheerio.load(body);
-    var info = $('div[class="question-info text-info"] ul li strong');
+    var info = $('div[class^=question-info] ul li strong');
 
     problem.totalAC = $(info[0]).text();
     problem.totalSubmit = $(info[1]).text();