Update ruby to 2.7

Author: GalenkoEugene

.ruby-version

@@ -1 +1 @@
-2.4.1
+2.7.6

.travis.yml

@@ -1,5 +1,5 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.4.1
-before_install: gem install bundler -v 1.15.0
+  - 2.7.6
+before_install: gem install bundler -v 2.4.7

Gemfile

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 source 'https://rubygems.org'
-ruby '2.4.1'
+ruby '2.7.6'
 gem 'pry', '~> 0.10'
 gem 'rubocop', '~>0.48'
 gemspec

circle.yml

@@ -1,6 +1,6 @@
 machine:
   ruby:
-    version: 2.4.1
+    version: 2.7.6
 
 dependencies:
   pre:

codebreaker.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.15'
-  spec.add_development_dependency 'rake', '~> 10.0'
-  spec.add_development_dependency 'rspec', '~> 3.5'
+  spec.add_development_dependency 'bundler', '~> 2.4.7'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rspec', '~> 3.12'
 end

lib/codebreaker/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Codebreaker
-  VERSION = '0.1.3'
+  VERSION = '0.1.4'
 end

travis.yaml

@@ -1,5 +1,5 @@
 language: ruby
 rvm:
-  - 2.4.1
+  - 2.7.6
 # uncomment and edit the following line if your project needs to run something other than `rake`:
 script: bundle exec rspec spec