Implement feature to parse each person's report

Parsed result is Hash Object for create CSV or graph like below:
  {name0 =>
    {date0 => {:read_rate => xxx, :comment => yyy},
     date1 => {:read_rate => zzz, :comment => aaa},
     ...,
     dateX => {...}
    },
   name1 => { ... },
   ...
  }