add rbenv_execute helper for executing commands with rbenv enabled
add documentation for rbenv_execute
don't make ruby_version a required attribute on rbenv_execute
ruby_version, not rbenv_version
refactor helper functions in LWRPs into Chef::Mixin::Rbenv
use updated_by_last_action instead of inline resources in execute lwrp
Merge pull request #55 from RiotGames/execute-lwrp

Add execute LWRP
fix environment issues when installing gems with rbenv_gem
ensure path is properly set when installing rbenv gems
Merge pull request #56 from RiotGames/fix-env-issues

fix environment issues when installing gems with rbenv_gem
version bump 1.6.0
fix critical scoping error when forming environment/path in execute resource
version bump 1.6.1
use proper constant name for setting ruby version when installing gems

WHY GOD CAN I NOT GET THIS RIGHT THE FIRST TIME?
version bump 1.6.2
source zsh autocomplete when using zshell
ensure rbenv is initialized before executing commands
Merge pull request #58 from RiotGames/support-zsh-autocomplete

source zsh autocomplete when using zshell
Merge pull request #59 from RiotGames/init-rbenv

ensure rbenv is initialized before executing commands
bump version 1.6.3