Updated tutorials to mention using multiple filenames

Author: Jacob Pennington

docs/gui_guide.rst

@@ -7,7 +7,7 @@ This page explains how to use the basic functions of Kilosort4 GUI, in order of
 
 Select data
 -----------
-Start by selecting a binary data file (.bin, .bat, .dat, or .raw) to load, by clicking on the "Select Binary File" button near the top-left of the GUI. This will open a file dialog that will populate the neighboring text field after a file is selected. You can also paste a filepath directly into the text field.
+Start by selecting a binary data file (.bin, .bat, .dat, or .raw) to load by clicking on the "Select Binary File" button near the top-left of the GUI. This will open a file dialog that will populate the neighboring text field after a file is selected. You can also paste a filepath directly into the text field. If you select/enter multiple data files, they will be treated as if concatenated in time in the order provided.
 
 .. image:: https://www.kilosort.org/static/images/gui_select_binary.png
    :width: 600

docs/tutorials/basic_example.ipynb

@@ -86,7 +86,7 @@
     "# NOTE: 'n_chan_bin' is a required setting, and should reflect the total number\n",
     "#       of channels in the binary file. For information on other available\n",
     "#       settings, see `kilosort.run_kilosort.default_settings`.\n",
-    "settings = {'data_dir': SAVE_PATH.parent, 'n_chan_bin': 385}\n",
+    "settings = {'filename': SAVE_PATH, 'n_chan_bin': 385}\n",
     "\n",
     "ops, st, clu, tF, Wall, similar_templates, is_ref, est_contam_rate, kept_spikes = \\\n",
     "    run_kilosort(\n",
@@ -95,6 +95,13 @@
     "        )"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "`run_kilosort` will also accept a list of paths for the `filename` setting, in which case the files will be concatenated in time in the order provided. The built-in `glob` library provides methods for easily collecting lists of file names, but make sure you check the ordering."
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},