Improve bundle show -V
Remove unneeded require
Guard in outdated? check
Fix remaining spec
Only use Bundler methods for outdated check
Show gems count after install
:heart: @searls
RG 2.3 was never included in a release of Ruby, however the latest minor series
(v2.4) will be included with the release of Ruby 2.2.

The latest version of RG in this series is currently 2.4.4.
[Env] Include git version
cleanup tempdir
Merge pull request #3277 from obfusk/fix-tmpdir-cleanup

cleanup tempdir
ensure that cleanup won’t raise another exception
Merge pull request #3273 from segiddins/seg-env-git

[Env] Include git version
record git not installed as well
Merge pull request #3274 from zzak/change-latest-rg-version

Use latest minor series of RG
test against the latest rubygems version
Merge pull request #3129 from citizen428/master

Improve bundle show -V
change show --remote to --outdated
Merge pull request #3268 from kirs/show-gems-count

Show gems count after install
Refine completion messages

Now that we’re printing the number of gems requested and installed in
the bundle, it seems good to put those on the same line as the message
that says “your bundle is complete!”. While we’re updating that message,
it seems good to remove “your”, because it’s unclear whose bundle it is
anyway. It’s just A Bundle, or The Bundle, which means we don’t need
a pronoun or possessive.