Remove bundler dependency

[koenpunt]

This change makes using bundler optional

More on this here: https://github.com/capistrano/bundler#usage

[evaldasg]

+1 for this

[ernetas]

+1

[evaldasg]

also you need hook rvm (if you use one):

set :rvm_map_bins, fetch(:rvm_map_bins, []).push('unicorn')

or if rbenv:

set :rbenv_map_bins, fetch(:rbenv_map_bins).to_a.concat(%w(unicorn))

[koenpunt]

Or rbenv for that matter, but people who will use those implementations, will probably know the implication of the usage.

[evaldasg]

no I didn't knew... I needed to read how sidekiq capistrano tasks was implemented.

[koenpunt]

set :rbenv_map_bins, fetch(:rbenv_map_bins).to_a.concat(%w(unicorn))

is incorrect, or at least cumbersome.

this is more concise:

set :rbenv_map_bins, fetch(:rbenv_map_bins, []).push('unicorn')

[evaldasg]

but it work's: set :rvm_map_bins, fetch(:rvm_map_bins).to_a.concat(%w(unicorn)) or set :rbenv_map_bins, fetch(:rbenv_map_bins).to_a.concat(%w(unicorn)) or for : chruby_map_bins or for bundle_bins

[koenpunt]

or at least cumbersome