README.md - install bundler from distribution RPMs
Merge pull request #20 from lslezak/bunder_rpm

README.md - install bundler from distribution RPMs
added tune.patch for compiling yast2-tune
Merge pull request #22 from lslezak/compile_tune_module

Added tune.patch for compiling yast2-tune
Merge pull request #21 from lslezak/yast_core_rpm

README.md - Alternatively install yast2-core from YaST:Head:ruby
Merge remote-tracking branch 'upstream/master' into yast_core_rpm