Add test and fix getter method for download in repos.rb

Author: cltweedie

lib/bitbucket_rest_api/repos.rb

@@ -72,10 +72,10 @@ def forks
       @forks ||= ApiFactory.new 'Repos::Forks'
     end
     def commits
-      @services ||=ApiFactory.new 'Repos::Commits'
+      @commits ||=ApiFactory.new 'Repos::Commits'
     end
     def download
-      @services ||=ApiFactory.new "Repos::Download"
+      @download ||=ApiFactory.new "Repos::Download"
     end
 
     # Access to Repos::PullRequests API

spec/bitbucket_rest_api/repos_spec.rb

@@ -151,6 +151,7 @@
       expect(repo.commits).to be_a BitBucket::Repos::Commits
       expect(repo.pull_request).to be_a BitBucket::Repos::PullRequest
       expect(repo.forks).to be_a BitBucket::Repos::Forks
+      expect(repo.download).to be_a BitBucket::Repos::Download
     end
   end
 end