Add support for IRB-alternatives (Pry and Ripl) to `bundle console`.
Set called console to the one in `bundle config console`

IRB alternatives can be selected by setting the config key
`console`, for example with `bundle config console pry`.
Displays the previous version of the gem when run bundle update

Change code in the 3 source files to display the method locked_gems in
lib/bundler.rb

Add 3 Rspec test in the update directory for each source: rubygems, git,
path.
Put old version message in the  block level

Change bundle update message format

Change rspec bundle update message text to match in files (rubygem, git, path
source, etc)
fix raising error when path contains unexisting users home dir
Added the message 'Could not locate Gemfile' to the GemfileNotFound exception raised by Bundler::Settings#[]=.
By doing this, users who just run 'bundle' in the wrong directory will see a friendly message instead of just "Bundle::GemfileNotFound".
Update README to reflect progress towards 1.5
Merge pull request #2719 from olivierlacan/master

Update README to reflect progress towards 1.5
lazy-init the rubygems source

this means that you can create a DSL without a Gemfile
in the directory. yay?
require things you need lolsigh
heyyyy message doesn't have a backtrace in it huh
rubygems 2.1.11
bluebox dns is fixed now
Add 'bundle update --group' option
Enable fast finishing builds
Clickable URL in friendly exceptions
Merge pull request #2732 from sunny/patch-1

URLs in friendly exceptions
Merge pull request #2620 from joallard/consoles

Set called console to the one in `bundle config console`

Conflicts:
	CHANGELOG.md
Hightlight "Installing" logs
Merge pull request #2722 from yaotti/highlight-installing-outputs

Hightlight "installing" logs