Create README.md

README.md

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+Wordsearch generator
+====================
+
+This is a Wordsearch generator written in C largely as an exercise in remembering how to use C having originally implemented it in Java (see https://github.com/fooflington/wordsearch-c).
+
+Compiling
+---------
+
+Generally you'll probably want the *Release* version which has Optimisation enabled:
+
+```bash
+cd Release && make
+```
+
+This will drop a `wordsearch` executable
+
+Running
+-------
+
+```
+Usage: wordsearch <height> <width> [ words ... ]
+```
+
+For example:
+
+```
+$ ./wordsearch 15 15 gaping panicky lock purple geese massive judge hateful
+```
+
+For an existing list of words, the following form can be useful:
+
+```
+$ cat file.txt | xargs ./wordsearch 15 15
+```
+
+There are some example wordlists included in `tests`.