Improved accuracy of message

As written there: https://factor.cc/pad/p/sup-ideas using "loaded" instead of "found" is more accurate, because if something isn't found,that doesn't mean it doesn't exist.

lib/sup/modes/thread_index_mode.rb

@@ -730,7 +730,7 @@ def load_threads opts={}
       opts[:when_done].call(num) if opts[:when_done]
 
       if num > 0
-        BufferManager.flash "Found #{num.pluralize 'thread'}."
+        BufferManager.flash "Loaded #{num.pluralize 'thread'}."
       else
         BufferManager.flash "No matches."
       end