added 306

finished chapter 3 of the tutorial
warning: there is a memory leak in 305 that happens rarely, it requires debugging

Former-commit-id: b25ed574a2

python/py_igl.cpp

@@ -31,6 +31,7 @@
 #include <igl/min_quad_with_fixed.h>
 #include <igl/SolverStatus.h>
 #include <igl/active_set.h>
+#include <igl/eigs.h>
 
 void python_export_igl(py::module &m)
 {
@@ -63,5 +64,6 @@ void python_export_igl(py::module &m)
 #include "py_igl/py_min_quad_with_fixed.cpp"
 #include "py_igl/py_SolverStatus.cpp"
 #include "py_igl/py_active_set.cpp"
+#include "py_igl/py_eigs.cpp"
 
 }