add instructions

Author: bcjordan

README.md

@@ -1,9 +1,22 @@
-cfi
+The Coding For Interviews Verification Tool
 ===
 
-The Coding For Interviews Verification Tool
+## Usage
+
+To give it a spin you can do the following:
+
+    node index.js list
+
+    node index.js test "Tree Zig Zag" "command for executing your tree-zig-zag solution"
+
+NOTE: your command will be dumped directly into terminal, so if it is a python file do ./tree_zig_zag.py
+
+## How it works
+
+It maintains a clone of of the cli_tests repo in ~/.cfi, each folder is a problem, each problem contains unit tests [0-9]*.{input,ouput}
+It loads these in and runs unit tests asynchronously.
 
 Build Status
 ===
 
-[![Build Status](https://travis-ci.org/Crackerz/cfi.png?branch=master)](https://travis-ci.org/Crackerz/cfi)
+[![Build Status](https://travis-ci.org/codingforinterviews/cfi.png?branch=master)](https://travis-ci.org/codingforinterviews/cfi)