Enhance TODO list.
ClientBootstrap fixed.
Fix container thread safe function issue, use no wrapped functions.
Use fixed thread pool.
Reader thread echo functionality done.
Worker thread shell done.
Compilation fixed!
Merge branch 'develop'

* develop:
  Compilation fixed!
  Worker thread shell done.
  Reader thread echo functionality done.
  Use fixed thread pool.
  Fix container thread safe function issue, use no wrapped functions.
  ClientBootstrap fixed.
  Enhance TODO list.