Readme and exmaple

README.md

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+
+# Tigersay #
+
+![Once upon a time, there were a programming language named Tiger, and nobody used it. Then some stupid student though 'lets write a clone of cowsay'. And that is how I was born](./example.png)
+
+An implementation of the classic Perl program
+[cowsay](https://en.wikipedia.org/wiki/Cowsay) in
+the Tiger programming language from the
+[Modern Compiler Implementation in ML/C/Java](https://www.cs.princeton.edu/~appel/modern/ml/)
+books.
+
+Mostly written for the kicks, and also for testing my group's
+tiger-compiler.
+
+The framework we're using does not allow us to
+parse commandline-arguments, so the only way to interact with
+`tigersay` is to pipe into the compiled program. For example
+`echo "Grrrrr" | tigersay`. For the same reasons it does not
+support alternative faces.
+
+## License ##
+
+License is `beerware`:
+
+    <jonjmaa@gmail.com> wrote this program. As long as you retain this notice you
+    can do whatever you want with this stuff. If we meet some day, and you think
+    this stuff is worth it, you can buy me a beer in return.
+    - Jon Michael Aanes
+