[README] add some meaningful text

README

@@ -3,76 +3,19 @@
 # Copyright holders: Felix Albrecht
 # License: BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
 
-Preparing the Sources
-=========================
-
-Additional to the software mentioned in README you'll need the
-following programs installed on your system:
-
-  automake >= 1.5
-
-  autoconf >= 2.50
-
-  libtool
-
-Getting started
----------------
-
-If these preliminaries are met, you should run 
-
-  dunecontrol all
-
-which will find all installed dune modules as well as all dune modules 
-(not installed) which sources reside in a subdirectory of the current 
-directory. Note that if dune is not installed properly you will either
-have to add the directory where the dunecontrol script resides (probably 
-./dune-common/bin) to your path or specify the relative path of the script.
-
-On your project and all uninstalled DUNE source modules found the script 
-will then calls the GNU autoconf/automake to create a ./configure-script 
-and the Makefiles. Afterwards that configure script will be called and the
-modules will be build using make all
-
-Most probably you'll have to provide additional information to dunecontrol 
-(e. g. compilers, configure options) and/or make options. 
-
-The most convenient way is to use options files in this case. The files
-defining three variables:
-
-AUTOGEN_FLAGS    flags passed to autogen
-CONFIGURE_FLAGS  flags passed to configure
-MAKE_FLAGS       flags passed to make
-
-An example options file might look like this:
-
-#use this options to autogen, configure and make if no other options are given
-AUTOGEN_FLAGS="--ac=2.50 --ac=1.8" #Forces automake 2,50 and autoconf 1.8
-CONFIGURE_FLAGS="CXX=g++-3.4 --prefix=/install/path" #force g++-3.4 as compiler
-MAKE_FLAGS=install #Per default run make install instead of simply make
-
-If you save this information into example.opts you can path the opts file to
-dunecontrol via the --opts option, e. g.
-
-  dunecontrol --opts=example.opts all
-
-To get a full list of available configure flags just run
-
-  dunecontrol configure --help
-
-after running at least 
-  dunecontrol autogen
-
-More info
----------
-
-See
-
-     dunecontrol --help
-   
-for further options.
-
-
-The full build-system is described in the dune-common/doc/buildsystem (SVN version) or under share/doc/dune-common/buildsystem if you installed DUNE!
-
-$Id$
-
+dune-gdt is a DUNE (http://www.dune-project.org) module which provides a
+generic discretization toolbox for grid-based numerical methods. It contains
+building blocks - like local operators, local evaluations, local assemblers -
+for discretization methods as well as generic interfaces for objects like
+discrete function spaces and basefunction sets. Default implementations for
+these objects are provided using several of the main DUNE discretization
+modules, like dune-fem (http://dune.mathematik.uni-freiburg.de/) or
+dune-fem-localfunctions
+(http://users.dune-project.org/projects/dune-fem-localfunctions).
+
+New users may best try out this module by using the git supermodule
+dune-gdt-demos (http://users.dune-project.org/projects/dune-gdt-demos).
+Experienced DUNE users may go ahead. As usual, you will have to call autogen,
+configure and make using dunecontrol
+(see http://www.dune-project.org/doc/installation-notes.html), working
+examples are located in 'examples/'...