minor tweaks to the Rakefile

Rakefile

@@ -82,7 +82,7 @@ task import: %w(bundle_install) do
 end
 
 task :bundle_install do
-  sh 'bundle install'
+  sh 'bundle check || bundle install'
 end
 
 task :clean do
@@ -100,7 +100,7 @@ task :lint do
       .each do |link|
         case link.scan('->').length
         when 0
-          #puts("link contains no ->, probably not a problem")
+          #link contains no ->, probably not a problem
           text = link
         when 1
           # no problem