[refactor] keep pace with leetcode-cli 2.5.4

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

Author: skygragon

plugins/github.js

@@ -2,6 +2,7 @@ var path = require('path');
 var url = require('url');
 
 var h = require('../helper');
+var file = require('../file');
 var log = require('../log');
 var Plugin = require('../plugin');
 
@@ -47,7 +48,7 @@ plugin.submitProblem = function(problem, cb) {
       }
 
       ctx.message = 'update ' + filename;
-      ctx.content = new Buffer(h.getFileData(problem.file)).toString('base64');
+      ctx.content = new Buffer(file.data(problem.file)).toString('base64');
 
       var onFileDone = function(e, res) {
         if (e)

plugins/lintcode.js

@@ -4,6 +4,7 @@ var request = require('request');
 var util = require('util');
 
 var h = require('../helper');
+var file = require('../file');
 var config = require('../config');
 var log = require('../log');
 var Plugin = require('../plugin');
@@ -218,7 +219,7 @@ function runCode(problem, isTest, cb) {
   opts.headers.referer = problem.link;
   opts.form = {
     problem_id:          problem.id,
-    code:                h.getFileData(problem.file),
+    code:                file.data(problem.file),
     language:            lang.text
   };
   if (isTest) {