Remove all remainders of localleader munging.

Also
 * fix the documentation to work with Pathogenized plugin
 * explain configuration via vimoutlinerrc

Fixes #41
Move README.detailed to doc/votl.txt to make Pathogen working.
Gramatical and stylistic corrections.

* Fix legay -> legacy.
* The first sentence of "Comma comma commands" section was fixed.
Remove vimball reference.