Added missing dependency

.travis.yml

@@ -4,6 +4,11 @@ python:
   - "3.6"
   - "3.7-dev"
 
+os: osx
+
+git:
+  depth: false
+
 install:
   - pip install .
 

setup.py

@@ -18,6 +18,6 @@ setuptools.setup(
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
-    setup_requires=['pytest-runner', 'pyopencl', 'pybind11', 'numpy'],
+    setup_requires=['pytest-runner', 'mako', 'pyopencl', 'pybind11', 'numpy'],
     tests_require=["pytest"]
 )