Gatling 3.0.0

Update to Gatling 3.0.0

Gatling 3.0.0.0-RC1

Gatling migration guide https://gatling.io/docs/current/migration_guides/2.3-to-3.0/#to-3-0

v2.3.0.0

• Updated scala to 2.12.3
• Updated gatling to 2.3.0
• Updated gatling-sbt to 2.2.2 and up version to 2.3.0.0
• Adopted new versioning pattern

v0.1

Initial release.