Timer Class
Add Timer ID
Enhance Timer
Minor change on Timer
local changes
Merge branch 'chronograph' of https://github.com/limingjie/algorithm into chronograph

Conflicts:
	MyTimerTest.cpp
Cleanup

Remove MyTimerTest.cpp
More accurate and clean Timer

Lots of update.
1. Added start/pause/stop/resume functions
2. Separate print function to better handle format and make code clear.
3. Use name instead of random id to remove complexity.
4. m, s, ms format with ticks
5. By default, timer does not start after constructed, to get more
accurate time when multi timers overlaps.
Spelling
Merge Stopwatch to Master
Merge Stopwatch to Master