Replace some files.
Modify the files so that it can be executed.
Modify makefile.
Update header file as well as fix some logical errors.
Fix the bug when reading data from file.
Fix a ridiculous bug.
Correct some errors.
Modify header and implementation of class Storage.
Add functions for update users.
Finish the majority of DIY functions.
Merge pull request #1 from chenzeyuczy/C++11

C++11