modify the LW estimation for better floating point output formating
   checkin another experimental workflow "HBAR_WF2.py" (and get_preads.py"

[git-p4: depot-paths = "//depot/private/jchin/HBAR-DTK/": change = 123111]
modify the LW estimation example using a better floating point format
check in the experimental workflow "HBAR_WF2.py"
Merge branch 'master' of github.com:PacificBiosciences/HBAR-DTK