More READMEs

diff --git a/README.md b/README.md
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+centaur
+=======
+
+centaur is an ELF executable editing toolkit.
+
+
+Features
+--------
+
+At the moment, centaur provides:
+  - Code injection from object files into executables
+  - Function detouring in executables
+
+
+Build instructions, Credits, License, ...
+-----------------------------------------
+
+See the docs/ directory for more documentation.

diff --git a/docs/building.md b/docs/building.md
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+Build instructions
+==================
+
+To build the CLI front-end, the static library and the shared library,
+change to the top-level directory and run
+
+    make
+
+This will create a build/ directory containing the intermediary and
+output files.
+
+
+Dependencies and pkg-config
+---------------------------
+
+There is currently one hard dependency, libelf.
+
+The Makefile uses pkg-config to try and autodetect the necessary
+compiler and linker flags. Failing this, it defaults to "-lelf" to
+link against libelf, and no additional include directories.
+
+On Ubuntu, development files can be installed using
+    apt-get install libelfg0-dev
+for tired's libelf (preferred), or
+    apt-get install libelf-dev
+for Red Hat's libelf.
+
+
+Documentation
+-------------
+
+Additional documentation can be generated from the source files using
+Doxygen. If it is available on your machine, issue
+
+    make docs
+
+to build it in docs/.
+
+
+Cleanup
+-------
+
+The usual
+    make clean
+and
+    make distclean
+are supported to clean binary files (clean), or all backup and
+generated files (distclean).
+
+
+Installation
+------------
+
+There is currently no automated installation.
+
+If you need system-wide availability, you can copy
+    include/libelfu --> /usr/local/include/
+    build/elfucli --> /usr/local/bin/
+    build/libelfu.{a,so*} --> /usr/local/lib/
+or your local variation thereof.

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+centaur is Copyright 2013, Max Staudt.
+
+It builds upon libelf, of which there are various implementations.
+Testing has been done with tired's libelf, as well as Red Hat's variant.
+
+See http://www.mr511.de/software/english.html for more details on libelf.