(maint) Add ENV cfg option for scenario selection
(maint) Fix pathing for simulation config
(maint) Change absolute_path to expand_path

Ruby 1.8.7 does not support absolute_path, try expand_path.
Add a few new simple scenarios
Lower the numbers in the vanilla scenarios to avoid killing server
Lowering the counts even further
Bumping 'tiny' scenario down to 2
Fix so that generated sims don't need to be modified to support `repeat`

Prior to this commit, the pattern that I was using to allow sims
generated by the Gatling Recorder to support programmatic/config-driven
`repeat` functionality was to edit each one by hand and add a
constructor argument for the desired number of repetitions.

Thanks to some help from the gatling mailing list, I was able to
cobble together a hack in `ConfigDrivenSimulation` that removes
the requirement for that particular hand-edit for each generated
simulation.

This commit also removes those hand-edits from the two existing
sims.
Bump up the vanilla_tiny numbers just a bit
Move simulation runner into its own directory
Add proxy recorder to this project
Clean up build files and make minor improvements to docs
Merge pull request #2 from cprice-puppet/maint/master/reorganize-project

Maint/master/reorganize project
Upgrade to gatling 1.5.1, add a logging config file
Bumping up numbers for vanilla scenarios
Update vanilla_miniscule.json
Update vanilla_tiny.json
Update vanilla_tiny.json
Update vanilla_miniscule.json
Update vanilla_tiny.json