Fix error message (--remote, not --origin).

bin/gistup

@@ -166,7 +166,7 @@ function gitInit(callback) {
 function gitRemoteDoesNotExist(callback) {
   child.exec("git config --get remote." + singlequote(argv.remote) + ".url || true", function(error, stdout, stderr) {
     if (!error && stderr) process.stderr.write(stderr), error = new Error("git config failed.");
-    if (!error && stdout) error = new UserError("the remote \"" + argv.remote + "\" already exists." + os.EOL + os.EOL + "Are you trying to run gistup in a directory that already has a git" + os.EOL + "repository? This would overwrite your existing remote, which points to:" + os.EOL + os.EOL + "  " + stdout + os.EOL + "If you’ve previously run gistup in this directory and you want to update" + os.EOL + "your gist, just push to the existing git remote:" + os.EOL + os.EOL + "  git push" + os.EOL + os.EOL + "Or, if you don’t need this remote anymore, remove it and gistup will" + os.EOL + "replace it with a new one the next time you run it:" + os.EOL + os.EOL + "  git remote rm " + argv.remote + os.EOL + os.EOL + "Lastly, you can also specify a different remote name for gistup, so that" + os.EOL + "you can push to multiple git remotes:" + os.EOL + os.EOL + "  gistup --origin=gist" + os.EOL + os.EOL + "Please fix and try again.");
+    if (!error && stdout) error = new UserError("the remote \"" + argv.remote + "\" already exists." + os.EOL + os.EOL + "Are you trying to run gistup in a directory that already has a git" + os.EOL + "repository? This would overwrite your existing remote, which points to:" + os.EOL + os.EOL + "  " + stdout + os.EOL + "If you’ve previously run gistup in this directory and you want to update" + os.EOL + "your gist, just push to the existing git remote:" + os.EOL + os.EOL + "  git push" + os.EOL + os.EOL + "Or, if you don’t need this remote anymore, remove it and gistup will" + os.EOL + "replace it with a new one the next time you run it:" + os.EOL + os.EOL + "  git remote rm " + argv.remote + os.EOL + os.EOL + "Lastly, you can also specify a different remote name for gistup, so that" + os.EOL + "you can push to multiple git remotes:" + os.EOL + os.EOL + "  gistup --remote=gist" + os.EOL + os.EOL + "Please fix and try again.");
     callback(error);
   });
 }