Update basis_spec.txt
diff --git a/spec/basis_spec.txt b/spec/basis_spec.txt
index 37b5174..48b17d6 100644
--- a/spec/basis_spec.txt
+++ b/spec/basis_spec.txt
@@ -824,3 +824,9 @@
At this point, the decoder has decoded each block's endpoint and selector codebook indices.
It can now fetch the actual ETC1S endpoints/selectors from the codebooks and write out ETC1S
texture data, or it can transcode the ETC1S data to another texture format.
+
+11.0 Example Bitstreams
+-----------------------
+
+This section will include several example .basis file bitstreams, along with their decoded equivalents, which should be helpful for new decoder verification.
+
