Fixed errors to run 'res.end()'

server/errors.coffee

@@ -2,34 +2,34 @@
 
 module.exports.custom = (res, code=500, message='Internal Server Error') ->
   res.send code, message
-  res.end
+  res.end()
 
 module.exports.unauthorized = (res, message='Unauthorized') ->
   # TODO: The response MUST include a WWW-Authenticate header field
   res.send 401, message
-  res.end
+  res.end()
 
 module.exports.forbidden = (res, message='Forbidden') ->
   res.send 403, message
-  res.end
+  res.end()
 
 module.exports.notFound = (res, message='Not found.') ->
   res.send 404, message
-  res.end
+  res.end()
 
 module.exports.badMethod = (res, message='Method Not Allowed') ->
   # TODO: The response MUST include an Allow header containing a list of valid methods for the requested resource
   res.send 405, message
-  res.end
+  res.end()
 
 module.exports.conflict = (res, message='Conflict. File exists') ->
   res.send 409, message
-  res.end
+  res.end()
 
 module.exports.badInput = (res, message='Unprocessable Entity. Bad Input.') ->
   res.send 422, message
-  res.end
+  res.end()
 
 module.exports.serverError = (res, message='Internal Server Error') ->
   res.send 500, message
-  res.end
+  res.end()