gargor v1.0.1 - Maintenance Release

• Add ruby 2.2.0 for travis-ci and update ruby 2.1 to 2.1.4.
• Describe runtime dependency from Gemfile to gargor.gemspec.

gargor v1.0.0 released

• Support continuous performance tuning
  • Write/read state file
  • Command line option
  • Recover when exterminated.