v2.3.0

• [#16] Changes the struct returned by #memory to LinuxMemory (if MemAvailable is in the procfs). That adds a new function LinuxMemory#available that returns the available bytes
• Adds missing Gemfile.lock (caused travis ci problems)
• Update .ruby-version and travis ci config to ruby 2.2.6

v2.2.0

• add OpenBSD and NetBSD support (#12)
• add Solaris/SmartOS support (#10)
• more stable tests (#9)
• run tests against ruby-head too (#8)