rustlings/exercises/tests/README.md

Going out of order from the book to cover tests -- many of the following exercises will ask you to make tests pass!

For this exercise check out the section [How to Write Tests](https://doc.rust-lang.org/book/2018-edition/ch11-01-writing-tests.html) of the Rust Book.
Created sub READMEs for CLI only version Sub READMEs contain the relevant resources from the main README of the web version. All second edition Rust Book links were updated to the 2018 edition. Fixed to typos in main README.md. 2018-11-26 10:43:42 -05:00			`Going out of order from the book to cover tests -- many of the following exercises will ask you to make tests pass!`

Changed Rust Book versions in links to 2018 Forgot to add changes to last commit. 2018-11-27 04:54:01 -05:00			`For this exercise check out the section [How to Write Tests](https://doc.rust-lang.org/book/2018-edition/ch11-01-writing-tests.html) of the Rust Book.`