Update dev dependencies with security issues

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Author: dzaporozhets

Gemfile

@@ -7,5 +7,5 @@ group :development, :test do
  gem 'guard'
  gem 'guard-rspec'
  gem 'vcr'
- gem 'rubocop', '0.28.0', require: false
+ gem 'rubocop', '0.49.1', require: false
 end

Gemfile.lock

@@ -2,11 +2,9 @@ GEM
  remote: http://rubygems.org/
  specs:
  addressable (2.3.2)
- ast (2.0.0)
- astrolabe (1.3.0)
- parser (>= 2.2.0.pre.3, < 3.0)
+ ast (2.4.0)
  coderay (1.0.8)
- crack (0.3.1)
+ crack (0.3.2)
  diff-lcs (1.2.5)
  docile (1.1.5)
  guard (1.5.4)
@@ -21,14 +19,17 @@ GEM
  lumberjack (1.0.2)
  method_source (0.8.1)
  multi_json (1.10.1)
- parser (2.2.0.2)
- ast (>= 1.1, < 3.0)
- powerpack (0.0.9)
+ parallel (1.12.1)
+ parser (2.5.0.2)
+ ast (~> 2.4.0)
+ powerpack (0.1.1)
  pry (0.9.10)
  coderay (~> 1.0.5)
  method_source (~> 0.8)
  slop (~> 3.3.1)
- rainbow (2.0.0)
+ rainbow (2.2.2)
+ rake
+ rake (12.3.0)
  rspec (2.14.1)
  rspec-core (~> 2.14.0)
  rspec-expectations (~> 2.14.0)
@@ -37,20 +38,22 @@ GEM
  rspec-expectations (2.14.5)
  diff-lcs (>= 1.1.3, < 2.0)
  rspec-mocks (2.14.6)
- rubocop (0.28.0)
- astrolabe (~> 1.3)
- parser (>= 2.2.0.pre.7, < 3.0)
- powerpack (~> 0.0.6)
+ rubocop (0.49.1)
+ parallel (~> 1.10)
+ parser (>= 2.3.3.1, < 3.0)
+ powerpack (~> 0.1)
  rainbow (>= 1.99.1, < 3.0)
- ruby-progressbar (~> 1.4)
- ruby-progressbar (1.7.1)
+ ruby-progressbar (~> 1.7)
+ unicode-display_width (~> 1.0, >= 1.0.1)
+ ruby-progressbar (1.9.0)
  simplecov (0.9.1)
  docile (~> 1.1.0)
  multi_json (~> 1.0)
  simplecov-html (~> 0.8.0)
  simplecov-html (0.8.0)
  slop (3.3.3)
  thor (0.19.1)
+ unicode-display_width (1.3.0)
  vcr (2.4.0)
  webmock (1.9.0)
  addressable (>= 2.2.7)
@@ -63,7 +66,7 @@ DEPENDENCIES
  guard
  guard-rspec
  rspec (~> 2.14.0)
- rubocop (= 0.28.0)
+ rubocop (= 0.49.1)
  simplecov
  vcr
  webmock