Create fish config dir.

bin/install

@@ -136,6 +136,8 @@ function __fisher_install_fisherman
         "Installing fisherman to $fisher_config" \
         "
             mkdir -p $fisher_config/{cache,functions,completions,conf.d,man}
+
+            mkdir -p $fish_config
             pushd $fish_config
 
             echo 'set -g fisher_home $fisher_home' | sed 's|/\$||;s|$home|~|' >> fisherconf