[meta] Add Rakefile for organizing common tasks

Rakefile

@@ -0,0 +1,9 @@
+# rsync -avz --exclude 'Newest Additions' --exclude '*.DS_Store' . ~/Dropbox/wallpapers/dlanham\ wallpapers
+
+namespace :clean do
+  task :ds_store do
+    sh 'find ~/Dropbox -name .DS_Store -print0 | xargs -0 rm'
+  end
+
+  task all: %i[ ds_store ]
+end