Update docs to mention new argument for annotate_hits_pyseer

Finishes #253

docs/tutorial.rst

@@ -404,6 +404,10 @@ haven't already been mapped to a previous annotation (requires ``bedtools``, ``b
 .. note:: If this runs slowly you can split the ``significant_kmers.txt`` file into
    pieces to parallelise the process.
 
+.. note:: By default ``annotate_hits_pyseer`` will only consider CDS features in the
+   provided GFF files. If you want to consider other feature types you can use the
+   ``--feature-type`` option (*e.g.* ``--feature-type rRNA --feature-type tRNA``).
+
 Annotations marked ``ref`` can partially match between k-mer and reference
 sequence, whereas those marked ``draft`` require an exact match. In this case
 the single draft didn't add any matches.

docs/usage.rst

@@ -660,6 +660,10 @@ ID will be used.
    of each query is slow, so only significant k-mers should be annotated in
    this manner.
 
+.. note:: By default ``annotate_hits_pyseer`` will only consider CDS features in the
+   provided GFF files. If you want to consider other feature types you can use the
+   ``--feature-type`` option (*e.g.* ``--feature-type rRNA --feature-type tRNA``).
+
 To summarise these annotations over all significant k-mers, use the
 ``summarise_annotations.py`` script::