Implemented initial thread burst in stepping thread group.

This allows to quickly reach a target number of threads to
then iterate with finer steps around that number.

The ramp up used for the initial burst is the same as for
the other steps.

The plugin is backward compatible and the initial thread burst
defaults to 0, which replicates the old behavior.
Extract loadosophia api client class to separate package
get version info from pom version
Working on loadosophia online
Placeholder for bg aggregating process
use JDK 6 in travis ci
Work on loadosophia online
Online qunatiles calculated
Online qunatiles calculated and sent
Online qunatiles calculated and sent
TRavis use 1.7 JDK
Add net codes sending to loadosophia online
Add rc codes sending to loadosophia online
add random choice fn
add random choice fn
Update unit tests
Update unit tests
Update unit tests
Update unit tests
Update unit tests