moved python tutorials in a folder, doing a pass to make them python 3 compatible

python/tutorial/101_FileIO.py

@@ -0,0 +1,18 @@
+from __future__ import print_function
+# Add the igl library to the modules search path
+import sys, os
+sys.path.insert(0, os.getcwd() + "/../")
+
+import igl
+
+# Load a mesh in OFF format
+V = igl.eigen.MatrixXd()
+F = igl.eigen.MatrixXi()
+igl.readOFF("../../tutorial/shared/cube.off", V, F)
+
+# Print the vertices and faces matrices
+print("Vertices: \n", V, sep='')
+print("Faces: \n", F, sep='')
+
+# Save the mesh in OBJ format
+igl.writeOBJ("cube.obj",V,F)