Add README and INSTALL files

INSTALL.org

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+* commit-check Installation Guide
+
+** For manual use
+
+   To get this project up and running make sure you have perl
+   installed and that commit-check is somewhere in your ~PATH~.
+
+** As git hook
+
+   Place the commit-check executable file in the ~.git/hooks~ directory
+   of your project, with the name ~commit-msg~. It doesn't need to be
+   the actual executable, it can also be a (soft) link to the
+   executable, or a script running this program (passing along all
+   arguments).

README.org

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+* commit-check v0.1.0
+
+  This is the commit-check project. It is a quick and easy commit
+  style checker that can be used either as a git hook to enforce the
+  style checked by commit-check, or as a syntax checker back-end (like
+  [[http://flycheck.readthedocs.org/en/latest/][Flycheck]]).
+
+  The file [[file:INSTALL.org]] contains instructions on how to install
+  commit-check on your system.
+
+  The entire code for the project is currently contained in the
+  [[file:commit-check]] file. The files [[file:test-pass.txt]],
+  [[file:test-fail-barely.txt]] and [[file:test-fail-miserably.txt]] are used
+  for testing purposes. They contain and explain certain situations
+  that can occur when writing commits that may or may not cause errors
+  to be reported.
+
+  This project is licensed under the GNU GPLv3, its terms and
+  conditions can be found in [[file:COPYING]].