Merge pull request #16 from zepag/master

Added maven profiles for 'demo' and 'qual'.
Upgrade Gatling 1.4.6
Merge pull request #17 from slandelle/master

Thanks Stephane, happy to have a reviewer like you here :
Integrate all scenarios in one file, add file loading skeleton
Gatling scenario 3, and merge scenarios
SLIDEs
Gatling implemented file upload
Merge pull request #18 from dbaeli/master

Gatling Perf New File Load testing