Syntax Update for parse_logs.py

Added disclaimer on the speedup/fetch multiplier
Added spaces for display between different speedup times
Edited output so that (without, w/o > w/o; simulation, sim > sim, etc.)
Minor syntax changes

two blank print statements > \n \n
More Syntax

speedup > fetch_speedup_multiplier in main function
Merge pull request #1 from lindanlee/master

Syntax Update for parse_logs.py