Spectra docs (#146)

* new submod pointer

* spectra docs

Author: kelle

docs/pages/ingesting/getting_started_ingesting.rst

@@ -2,8 +2,10 @@ Ingesting and Modifying Data
 ====================================
 
 .. toctree::
+    :glob:
     ingesting_publications
     ingest_scripts
+    spectra
 
 
 .. note::

docs/pages/converting_spectra/converting_spectra.rst renamed to docs/pages/ingesting/spectra/converting_spectra/converting_spectra.rst

@@ -0,0 +1,22 @@
+Spectra
+#######
+
+.. toctree::
+    :glob:
+    spectra/*
+
+
+Check if spectra are plottable
+------------------------------
+
+Use the :py:mod:`check_spectrum_plottable<astrodb_utils.spectra.check_spectrum_plottable>` function 
+to check if a spectrum is loadable by `astropy.specutils` and plottable.
+The `matplotlib` package needs to be installed to display the spectrum using `show_plot=True`.
+
+.. code-block:: python
+   from astrodb_utils.spectra import check_spectrum_plottable
+   file = <path to file>
+   plottable = check_spectrum_plottable(file, show_plot=True)
+   print plottable
+   
+   > True