Update gem dependencies to not be overly strict

[hyoshida]

% bundle exec rake all:build
...
WARNING:  pessimistic dependency on enumerize (~> 0.9.0) may be overly strict
  if enumerize is semantically versioned, use:
    add_runtime_dependency 'enumerize', '~> 0.9', '>= 0.9.0'
WARNING:  pessimistic dependency on state_machine (~> 1.2.0) may be overly strict
  if state_machine is semantically versioned, use:
    add_runtime_dependency 'state_machine', '~> 1.2', '>= 1.2.0'
WARNING:  pessimistic dependency on ancestry (~> 2.1.0) may be overly strict
  if ancestry is semantically versioned, use:
    add_runtime_dependency 'ancestry', '~> 2.1', '>= 2.1.0'
WARNING:  pessimistic dependency on acts_as_list (~> 0.6.0) may be overly strict
  if acts_as_list is semantically versioned, use:
    add_runtime_dependency 'acts_as_list', '~> 0.6', '>= 0.6.0'
WARNING:  pessimistic dependency on carrierwave (~> 0.10.0) may be overly strict
  if carrierwave is semantically versioned, use:
    add_runtime_dependency 'carrierwave', '~> 0.10', '>= 0.10.0'
WARNING:  pessimistic dependency on highline (~> 1.6.21) may be overly strict
  if highline is semantically versioned, use:
    add_runtime_dependency 'highline', '~> 1.6', '>= 1.6.21'
WARNING:  pessimistic dependency on comma (~> 3.2.4) may be overly strict
  if comma is semantically versioned, use:
    add_runtime_dependency 'comma', '~> 3.2', '>= 3.2.4'
WARNING:  pessimistic dependency on axlsx_rails (~> 0.3.0) may be overly strict
  if axlsx_rails is semantically versioned, use:
    add_runtime_dependency 'axlsx_rails', '~> 0.3', '>= 0.3.0'
WARNING:  pessimistic dependency on roo (~> 1.13.2) may be overly strict
  if roo is semantically versioned, use:
    add_runtime_dependency 'roo', '~> 1.13', '>= 1.13.2'
WARNING:  pessimistic dependency on liquid (~> 3.0.2) may be overly strict
  if liquid is semantically versioned, use:
    add_runtime_dependency 'liquid', '~> 3.0', '>= 3.0.2'
WARNING:  pessimistic dependency on liquid-rails (~> 0.1.2) may be overly strict
  if liquid-rails is semantically versioned, use:
    add_runtime_dependency 'liquid-rails', '~> 0.1', '>= 0.1.2'
...
WARNING:  pessimistic dependency on slim-rails (~> 3.0.1) may be overly strict
  if slim-rails is semantically versioned, use:
    add_runtime_dependency 'slim-rails', '~> 3.0', '>= 3.0.1'
WARNING:  open-ended dependency on sass-rails (>= 0) is not recommended
  if sass-rails is semantically versioned, use:
    add_runtime_dependency 'sass-rails', '~> 0'
WARNING:  pessimistic dependency on compass-rails (~> 2.0.4) may be overly strict
  if compass-rails is semantically versioned, use:
    add_runtime_dependency 'compass-rails', '~> 2.0', '>= 2.0.4'
WARNING:  pessimistic dependency on uglifier (~> 2.7.0) may be overly strict
  if uglifier is semantically versioned, use:
    add_runtime_dependency 'uglifier', '~> 2.7', '>= 2.7.0'
WARNING:  pessimistic dependency on bootstrap-sass (~> 3.3.3) may be overly strict
  if bootstrap-sass is semantically versioned, use:
    add_runtime_dependency 'bootstrap-sass', '~> 3.3', '>= 3.3.3'
WARNING:  pessimistic dependency on font-awesome-rails (~> 4.3.0.0) may be overly strict
  if font-awesome-rails is semantically versioned, use:
    add_runtime_dependency 'font-awesome-rails', '~> 4.3', '>= 4.3.0.0'
WARNING:  pessimistic dependency on kaminari (~> 0.16.2) may be overly strict
  if kaminari is semantically versioned, use:
    add_runtime_dependency 'kaminari', '~> 0.16', '>= 0.16.2'
WARNING:  pessimistic dependency on jquery-ui-rails (~> 5.0.3) may be overly strict
  if jquery-ui-rails is semantically versioned, use:
    add_runtime_dependency 'jquery-ui-rails', '~> 5.0', '>= 5.0.3'
WARNING:  pessimistic dependency on meta-tags (~> 2.0.0) may be overly strict
  if meta-tags is semantically versioned, use:
    add_runtime_dependency 'meta-tags', '~> 2.0', '>= 2.0.0'
...
WARNING:  pessimistic dependency on slim-rails (~> 3.0.1) may be overly strict
  if slim-rails is semantically versioned, use:
    add_runtime_dependency 'slim-rails', '~> 3.0', '>= 3.0.1'
WARNING:  open-ended dependency on sass-rails (>= 0) is not recommended
  if sass-rails is semantically versioned, use:
    add_runtime_dependency 'sass-rails', '~> 0'
WARNING:  pessimistic dependency on compass-rails (~> 2.0.4) may be overly strict
  if compass-rails is semantically versioned, use:
    add_runtime_dependency 'compass-rails', '~> 2.0', '>= 2.0.4'
WARNING:  pessimistic dependency on uglifier (~> 2.7.0) may be overly strict
  if uglifier is semantically versioned, use:
    add_runtime_dependency 'uglifier', '~> 2.7', '>= 2.7.0'
WARNING:  pessimistic dependency on bootstrap-sass (~> 3.3.3) may be overly strict
  if bootstrap-sass is semantically versioned, use:
    add_runtime_dependency 'bootstrap-sass', '~> 3.3', '>= 3.3.3'
WARNING:  pessimistic dependency on font-awesome-rails (~> 4.3.0.0) may be overly strict
  if font-awesome-rails is semantically versioned, use:
    add_runtime_dependency 'font-awesome-rails', '~> 4.3', '>= 4.3.0.0'
WARNING:  pessimistic dependency on kaminari (~> 0.16.2) may be overly strict
  if kaminari is semantically versioned, use:
    add_runtime_dependency 'kaminari', '~> 0.16', '>= 0.16.2'
WARNING:  pessimistic dependency on dynamic_form (~> 1.1.4) may be overly strict
  if dynamic_form is semantically versioned, use:
    add_runtime_dependency 'dynamic_form', '~> 1.1', '>= 1.1.4'
WARNING:  pessimistic dependency on ransack (~> 1.6.3) may be overly strict
  if ransack is semantically versioned, use:
    add_runtime_dependency 'ransack', '~> 1.6', '>= 1.6.3'
WARNING:  pessimistic dependency on jquery-ui-rails (~> 5.0.3) may be overly strict
  if jquery-ui-rails is semantically versioned, use:
    add_runtime_dependency 'jquery-ui-rails', '~> 5.0', '>= 5.0.3'
WARNING:  pessimistic dependency on raphael-rails (~> 2.1.2) may be overly strict
  if raphael-rails is semantically versioned, use:
    add_runtime_dependency 'raphael-rails', '~> 2.1', '>= 2.1.2'
WARNING:  pessimistic dependency on morrisjs-rails (~> 0.5.1) may be overly strict
  if morrisjs-rails is semantically versioned, use:
    add_runtime_dependency 'morrisjs-rails', '~> 0.5', '>= 0.5.1'
WARNING:  pessimistic dependency on nprogress-rails (~> 0.1.6.7) may be overly strict
  if nprogress-rails is semantically versioned, use:
    add_runtime_dependency 'nprogress-rails', '~> 0.1', '>= 0.1.6.7'
WARNING:  pessimistic dependency on gritter (~> 1.1.0) may be overly strict
  if gritter is semantically versioned, use:
    add_runtime_dependency 'gritter', '~> 1.1', '>= 1.1.0'
WARNING:  pessimistic dependency on turbolinks (~> 2.5.3) may be overly strict
  if turbolinks is semantically versioned, use:
    add_runtime_dependency 'turbolinks', '~> 2.5', '>= 2.5.3'
WARNING:  pessimistic dependency on jquery-turbolinks (~> 2.1.0) may be overly strict
  if jquery-turbolinks is semantically versioned, use:
    add_runtime_dependency 'jquery-turbolinks', '~> 2.1', '>= 2.1.0'
WARNING:  pessimistic dependency on awesome_admin_layout (~> 0.1.1) may be overly strict
  if awesome_admin_layout is semantically versioned, use:
    add_runtime_dependency 'awesome_admin_layout', '~> 0.1', '>= 0.1.1'
WARNING:  pessimistic dependency on ace-rails-ap (~> 3.0.2) may be overly strict
  if ace-rails-ap is semantically versioned, use:
    add_runtime_dependency 'ace-rails-ap', '~> 3.0', '>= 3.0.2'
WARNING:  pessimistic dependency on momentjs-rails (~> 2.10.2) may be overly strict
  if momentjs-rails is semantically versioned, use:
    add_runtime_dependency 'momentjs-rails', '~> 2.10', '>= 2.10.2'
WARNING:  pessimistic dependency on bootstrap3-datetimepicker-rails (~> 4.7.14) may be overly strict
  if bootstrap3-datetimepicker-rails is semantically versioned, use:
    add_runtime_dependency 'bootstrap3-datetimepicker-rails', '~> 4.7', '>= 4.7.14'
...
WARNING:  pessimistic dependency on ffaker (~> 2.0.0) may be overly strict
  if ffaker is semantically versioned, use:
    add_runtime_dependency 'ffaker', '~> 2.0', '>= 2.0.0'