Update readme example to use lastest ruby version
Creates cache folder for rbenv installations to benefit from https://github.com/sstephenson/ruby-build/pull/232
Add missing require to rbenv::cache-dir
Merge pull request #48 from fgrehm/update-version-on-readme

Update readme references to latest ruby release
Merge pull request #49 from fgrehm/ruby-build-tarball-cache

Creates cache folder for rbenv installations
ensure cache dir is created with right user/group
use correct syntax
Merge pull request #51 from rds13/master

Rbenv cache dir owner
Set ruby as global after compiling ruby
Merge pull request #54 from fgrehm/fix-global-true-on-first-run

Set ruby as global after compiling ruby
Add Fabio Rehm to core contributors
Pass --disable-install-doc configure option by default
Merge pull request #57 from intjonathan/compile_opts

Pass --disable-install-doc configure option by default, allow others
Pass in env vars for compilation as array
Merge pull request #58 from fgrehm/fix-configure-opts

Pass in env vars for compilation as array