superfluous backslash in zle widget removed
Merge pull request #4 from Vifon/patch-1

superfluous backslash in zle widget removed
new zsh widgets

+ new fzf-cd-widget for running cd

* fzf-file-widget now properly escapes the special characters and supports
  multi-selection

* fzf-history-widget replaces the current line instead of appending to it