Upgrade Rubocop to 0.25.0 for Travis builds

Change-Id: I556b5ad4c9d92f2d1c21f04648930a01b353a942
Reviewed-on: http://gerrit.causes.com/42207
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>

Author: sds

lib/overcommit/hook/pre_commit/rails_schema_up_to_date.rb

@@ -1,7 +1,7 @@
 module Overcommit::Hook::PreCommit
   # Check to see whether the schema file is in line with the migrations
   class RailsSchemaUpToDate < Base
-    def run # rubocop:disable CyclomaticComplexity
+    def run # rubocop:disable CyclomaticComplexity, PerceivedComplexity
       if migration_files.any? && schema_files.none?
         return :fail, "It looks like you're adding a migration, but did not update the schema file"
       elsif migration_files.none? && schema_files.any?

overcommit.gemspec

@@ -30,5 +30,5 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'image_optim', '~> 0.14.0'
   s.add_development_dependency 'rspec', '~> 3.0'
-  s.add_development_dependency 'rubocop', '0.24.1' # Pin for Travis builds
+  s.add_development_dependency 'rubocop', '0.25.0' # Pin for Travis builds
 end