fix error

lib/ldap_login/login.rb

@@ -12,11 +12,11 @@ module LdapLogin::Login
     uri = URI(LDAP_ADSERVER)
     req = Net::HTTP::Post.new(uri, 'Content-Type' => 'application/json')
     req.body = {AppKey: AppKey,username: ldap_user,password: ldap_pass}.to_json
-    req.read_timeout = 3000
 
     http = Net::HTTP.new(uri.host, uri.port)
     http.use_ssl = true
     http.verify_mode = OpenSSL::SSL::VERIFY_NONE
+    http.read_timeout = 3
     res = http.request(req)
     
     if res.code == '200' && JSON.load(res.body)["userID"]==ldap_user