consistent macro naming throughout the project
diff --git a/.travis.yml b/.travis.yml
index 17c56ec..03b1dc5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@
       compiler: gcc-4.8
       script:
         - pyvenv-3.5 venv
-        - cmake -DPYBIND_PYTHON_VERSION=3.5 -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.5m -DPYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.5m.so -DPYTHON_EXECUTABLE:FILEPATH=`pwd`/venv/bin/python3.5 -DCMAKE_CXX_COMPILER=g++-4.8
+        - cmake -DPYBIND11_PYTHON_VERSION=3.5 -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.5m -DPYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.5m.so -DPYTHON_EXECUTABLE:FILEPATH=`pwd`/venv/bin/python3.5 -DCMAKE_CXX_COMPILER=g++-4.8
         - make -j 2
         - source venv/bin/activate
         - pip install numpy
@@ -24,6 +24,6 @@
     - os: osx
       compiler: clang
       script:
-        - cmake -DPYBIND_PYTHON_VERSION=2.7
+        - cmake -DPYBIND11_PYTHON_VERSION=2.7
         - make -j 2
         - CTEST_OUTPUT_ON_FAILURE=TRUE make test