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README.md

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 # sloc
 A tiny Python script that finds the total lines of code in a directory tree.
+
+## Usage
+```
+python sloc.py cpp h
+```
+will find all files ending with `.cpp` and `.h` in the **current directory tree**, count how many lines they each have, and tell you the total.
+
+```
+python sloc.py -d /some/arbitrary/path py rb
+```
+will find all files ending with `.py` and `.rb` in the **/some/arbitrary/path directory tree**, count how many lines they each have, and tell you the total.