Remove :noswapfile.

:noswapfile throws a "not an editor command" error in gvim 7.4.
Fix fugitive regex for Windows.
Add :setlocal nowrap to manhunt buffer.

'wrap' is enabled by default in stock Vim,
which makes the manhunt buffer look strange.
Remove trailing whitespace.
Disable swapfile for manhunt buffer.
Update documentation for version 0.3.1.
README.md tweak.