Initial commit for ion

Changes to be committed:
	new file:   .gitignore
	new file:   Cargo.toml
	new file:   README.md
	new file:   src/lib.rs
	new file:   src/main.rs

.gitignore

+target
+Cargo.lock

Cargo.toml

+[package]
+name = "ion"
+version = "0.1.0"
+authors = ["Michael Gattozzi <mgattozzi@gmail.com>"]

README.md

+#Ion
+Ion is the underlying library for shells and command execution in
+Redox, as well as the default shell.

src/main.rs

+fn main() {
+}