diff --git a/.gitattributes b/.gitattributes
index aafaecf..ac85c03 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,5 @@
+src/* linguist-vendored
+
 .gitattributes text eol=lf
 .gitignore text eol=lf
 Makefile text eol=lf
diff --git a/.travis.yml b/.travis.yml
index ad7021a..aece02c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,4 @@
 language: python
-sudo: required
-dist: xenial
 group: travis_latest
 
 git:
@@ -9,7 +7,6 @@ git:
 
 python:
 - 3.6
-- 3.7
 
 os:
 - linux
diff --git a/README.md b/README.md
index 3636d07..4b47a09 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,20 @@ python setup.py build_ext --inplace --compiler=mingw32
   ![image](figures/iri2DExample01.png)
 * Latitude vs Longitude: plot of foF2 a function of geographic latitude and [longitude](scripts/iri2DExample02.py)
   ![image](figures/iri2DExample02.png)
+  
+### Matlab
+Many Python programs--including IRI2016--are readily accessible from Matlab.
+Here's what's you'll need:
+
+1. Python ≥ 3.6.  Check which Python version you have simply by typing from Terminal/Command Prompt (not in Matlab)
+   ```sh
+   python3
+   ```
+   If you need to install Python, consider [Miniconda](https://conda.io/miniconda.html) as it's a small install (normally, use the 64-bit version).
+2. Matlab ≥ R2017b, as this is when Python 3.6 was enabled. 
+   If you're stuck with older Matlab < R2017b, you can try to [force-enable Python 3.6](https://www.scivision.co/matlab-python-user-module-import/)
+3. The function [iri2016.m](iri2016.m) gives some examples of what you can do (run, plot) IRI2016 from Matlab calling Python (and ultimately the original Fortran code).
+   The functions in that file `xarrayind2vector()` and `xarray2mat()` translate Python's advanced Xarray N-D data structures to Matlab arrays.
 
 ## Notes
 
diff --git a/README_matlab.md b/README_matlab.md
deleted file mode 100644
index 3c824bb..0000000
--- a/README_matlab.md
+++ /dev/null
@@ -1,12 +0,0 @@
-Many Python programs--including IRI2016--are readily accessible from Matlab.
-Here's what's you'll need:
-
-1. Python ≥ 3.6.  Check which Python version you have simply by typing from Terminal/Command Prompt (not in Matlab)
-   ```sh
-   python3
-   ```
-   If you need to install Python, consider [Miniconda](https://conda.io/miniconda.html) as it's a small install (normally, use the 64-bit version).
-2. Matlab ≥ R2017b, as this is when Python 3.6 was enabled. 
-   If you're stuck with older Matlab < R2017b, you can try to [force-enable Python 3.6](https://www.scivision.co/matlab-python-user-module-import/)
-3. The function [iri2016.m](iri2016.m) gives some examples of what you can do (run, plot) IRI2016 from Matlab calling Python (and ultimately the original Fortran code).
-   The functions in that file `xarrayind2vector()` and `xarray2mat()` translate Python's advanced Xarray N-D data structures to Matlab arrays.
diff --git a/tests/test_mod.py b/tests/test_mod.py
index 898c488..887628a 100755
--- a/tests/test_mod.py
+++ b/tests/test_mod.py
@@ -29,4 +29,4 @@ def test_altitude_profile():
 
 
 if __name__ == '__main__':
-    pytest.main(['-x', __file__])
+    pytest.main(['-xv', __file__])
diff --git a/tests/test_scripts.py b/tests/test_scripts.py
index b864633..eeb0b06 100644
--- a/tests/test_scripts.py
+++ b/tests/test_scripts.py
@@ -22,4 +22,4 @@ def test_alt():
 
 
 if __name__ == '__main__':
-    pytest.main(['-x', __file__])
+    pytest.main(['-xv', __file__])