Remove the quotes.

Quoting the search has the unfortunate effect of searching for e.g. "x
y" when we really want to search for x and y; if we mean "x y", it's
possible to quote it manually.
Use stumpwm.

Without stumpwm, we don't have run-shell-command, &c.; and the module
won't load.
Merge pull request #19 from klutometis/master

The surfraw module won't load without :stumpwm.