l10n, create dir on creating file

templates/signup.html

@@ -1,10 +1,11 @@
-{{ define "title" }}Sign Up{{ end }}
+{{ define "title" }}註冊{{ end }}
 {{ define "main" }}
-<h1>Sign Up</h1>
+<h1>註冊</h1>
 <form action="/signup" method="POST">
     <label>Email: <input type="text" name="email"></label><br>
     <label>Password: <input type="password" name="password"></label><br>
     {{ with .Error }}<p class="error">{{ . }}</p>{{ end }}
-    <input type="submit" value="Sign Up">
+    <input type="submit" value="註冊">
 </form>
+<a href="signin">已有帳號嗎？登入</a>
 {{ end }}