Be explicit in what we accept as options
Access rubygems.org via https by default.
Merge pull request #1522 from jjb/bundler

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new gems should be built with https://rubygems.org as well
Adding documentation for the --shebang option. Let me know if the writing is OK. fixes #1475.
Merge pull request #1558 from lunks/shebang-man

Adding documentation for the --shebang option, fixes #1475.
Merge pull request #1562 from carlhuda/1522_https

1522 https
Fixes #1560 with an exit code of 1, and makes running clean_spec.rb
directly possible

By requiring digest/sha1 in spec_helper.rb, clean_spec.rb can now be
ran stand alone. I also fixed a typo which exposed a failing test.
Fixed failing test in clean_spec.rb
Fixed help message wording.

Help for `bundle update` and `bundle install` had incorrect wording for
the `clean` option.
Merge pull request #1563 from jredville/master

Fixed #1560 and update tests
Merge pull request #1564 from derekprior/help-fix

Fixed help message wording.
#1473 fix bundle clean output for git repos
do not clear RG cache unless we actually modify GEM_PATH and GEM_HOME
Merge pull request #1567 from tenderlove/caching

do not clear RG cache unless we actually modify GEM_PATH and GEM_HOME
stop asking for tickets on non-Bundler errors
only auto-namespace requires for implied requires

fixes #1531
#1561 don't clean when using --deployment
fix typo, thanks @jeremy
#1519 gracefully handle bundle exec with no args