readme and path fix

readme.md

@@ -1 +1,22 @@
-### piston
+## Piston
+This project is the underlying engine for running untrusted and possibly malicious code that originates
+from from EMKC contests and challenges.
+
+
+#### Installation
+- Install Docker https://www.docker.com/get-started
+- `git clone https://github.com/engineer-man/piston`
+- `cd piston/docker`
+- `./build`
+
+
+#### Usage
+- `docker/execute <lang> <path to file>`
+
+
+#### Supported Languages
+Currently python2, python3, c, c++, go, node, and ruby are supported.
+
+
+#### License
+Piston is licensed under the MIT license.