quickstart documentation problem for new users

[danielskatz]

In http://swift-lang.org/guides/release-0.96/quickstart/quickstart.html, there is a line
export PATH=$PATH:/path/to/swift-0.96.2/bin

Some new users don't realize that they shouldn't type this directly, but need to replace "/path/to" with the path to their swift. The documentation should state this.