update example project documentation

docs/Examples.rst

@@ -3,14 +3,15 @@
 Examples
 ========
 In the ``/examples`` sub directory several C++ and Fortran example
-programs are placed.
+programs are place, as well as example projects.
 
 Projects
 --------
+To show how to integrate our library into your project, there are example
+CMake and GNU make projects.
 
 CMake
 ^^^^^
-
 In the ``/examples`` directory are two example CMake projects. One uses a
 separately installed (or at least compiled) ALL, and the other includes
 the library as a subdirectory and builds it along with the main project.
@@ -63,6 +64,17 @@ automatically be build, but also to be rebuild every time the build
 directory is cleaned.
 
 
+GNU Make
+^^^^^^^^
+An example of integrating ALL into a traditional GNU Makefile project is
+shown in ``/example/MakefileProject``. A symbolic link to the VTK
+installation directory is assumed to exist as ``vtk_bin``, otherwise the
+Makefile must be updated (see ``VTK_DIR``). It also assumes its directory
+in the source tree as relative position to the ALL source directory.
+Moving the project needs updating of ``ALL_SOURCE``. It will automatically
+compile ALL using the options provided in ``LIBALL_CONFIGURE``.
+
+
 Programs
 --------