user-guide: updated for release 3.0
user-guide: Added chapter about various was of running PerfCake, and added RampUpDownMessageGenerator section.
user-guide: RampUpDownGenerator related sections updated
user-guide: PerfCake CLI section added.
user-guide: Maven plugin section added.
user-guide: PerfClipse section added.
user-guide: cleaned and updated the text
user-guide: started updating Validation section
logging config, fixe overlapping text
user-guide: LDAPSender section added
user-guide: Updated for https://github.com/PerfCake/PerfCake/issues/132
user-guide: Added troubleshooting chapter.
user-guide: JmsSender section updated.
documented maven goals
user-guide: Added migration guide.
user-guide: updated 2->3 migrating section
developer-guide: Updated maven goals section.
user-guide: updated *StatsReporter sections
user-guide: Updated examples and validation section.
developer-guide: Updated PerfCake version.