fixbug: 修正.sh文件路征

src/blog.js

@@ -8,7 +8,7 @@ http.createServer((req, res) => {
   let url  =  req.url;
   if(url.indexOf("/blog") != -1)
   {
-    let proc = ps.exec("blog.sh");
+    let proc = ps.exec("./blog.sh");
     proc.stdout.pipe(process.stdout);
     proc.stderr.pipe(process.stderr);
     res.end("ok");