Kill trailing whitespace in ruby files

config/state_checker.rb

@@ -5,11 +5,11 @@ class StateChecker
   end
 
 private
-  
+
   def secret_token_path
     File.expand_path("~/.danbooru/secret_token")
   end
-  
+
   def check_secret_token
     unless File.exists?(secret_token_path)
       raise "You must create a file in #{secret_token_path} containing a secret key. It should be a string of at least 32 random characters."
@@ -23,7 +23,7 @@ private
   def session_secret_key_path
     File.expand_path("~/.danbooru/session_secret_key")
   end
-  
+
   def check_session_secret_key
     unless File.exists?(session_secret_key_path)
       raise "You must create a file in #{session_secret_key_path} containing a secret key. It should be a string of at least 32 random characters."