Update the matching process for package_installed

Don't have need to use the 'grep'.
Realized with only 'npm ls #{pkg}'.
remove ruby 1.9.3 and add ruby 2.1.1
change badge format to svg
Merge pull request #2 from Blufe/patch-1

Update the matching process for package_installed
support latest version for node
update Vagrantfile
ignore Cheffile.lock
add librarian-chef config
Merge branch 'master' into maintenance

* master:
  Update the matching process for package_installed