Remove trailing whitespaces.

examples/config/database.yml.example

@@ -1,8 +1,8 @@
 #This is an example of what database.yml *should* look like (when I wrote it)
 #The real database.yml is generated automatically by the active record model lib (so it can be correct)
-two: 
+two:
   adapter: sqlite3
   database: /path/to/examples/features/support/../../db/activerecord_two.db
-one: 
+one:
   adapter: sqlite3
   database: /path/to/examples/features/support/../../db/activerecord_one.db

lib/database_cleaner/cleaners.rb

@@ -10,7 +10,7 @@ module DatabaseCleaner
     def [](orm, **opts)
       raise ArgumentError if orm.nil?
       fetch([orm, opts]) { add_cleaner(orm, **opts) }
-    end 
+    end
 
     def strategy=(strategy)
       values.each { |cleaner| cleaner.strategy = strategy }