Unpin rubocop to fix rubocop errors

Author: thatbudakguy

.rubocop.yml

@@ -1,5 +1,7 @@
 require:
   - rubocop-rspec
+
+plugins:
   - rubocop-rake
 
 inherit_from: .rubocop_todo.yml

geo_combine.gemspec

@@ -32,8 +32,8 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'rspec-html-matchers'
-  spec.add_development_dependency 'rubocop', '~> 1.25'
-  spec.add_development_dependency 'rubocop-rspec', '~> 2.8'
+  spec.add_development_dependency 'rubocop'
+  spec.add_development_dependency 'rubocop-rspec'
   spec.add_development_dependency 'rubocop-rake'
   spec.add_development_dependency 'simplecov'
   spec.add_development_dependency 'webmock', '~> 3.14'