Merge branch 'alecjacobson' of github.com:libigl/libigl into alecjacobson

Former-commit-id: 2c19a57cc68ace2963753e55b2168033b82100de

python/README.md

@@ -32,7 +32,8 @@ The cmake script will complain if it is not able to find python. In that case
 you can specify the location of the interpreter by specifying the following
 cmake variables.
 
-MacOSX/Linux:
+
+MacOSX:
 
 ```cmake
 SET(PYTHON_LIBRARIES "/usr/local/Cellar/python3/3.5.0/Frameworks/Python.framework/Versions/3.5/lib/libpython3.5m.dylib")
@@ -46,6 +47,13 @@ SET(PYTHON_LIBRARIES "C:/Python35/libs/python35.lib")
 SET(PYTHON_INCLUDE_DIR "C:/Python35/include")
 ```
 
+On Linux you may need to install the development version of python:
+
+```bash
+sudo apt-get install python-dev
+```
+
+
 ## Tutorial
 
 All libigl tutorials will be ported to python and will use the same naming