Merge #93

93: Change tempdir to tempfile in readme r=epage a=Dylan-DPC

<!--
Thank you for taking the time to contribute to this project!

To ease reviewing your changes and making sure we don't forget anything,  please
take a minute to check the following (remove lines that don't apply), and
replace this text with a description of what this PR does. Bonus points for
linking to issues! :)
-->

- [n/A] I have created tests for any new feature, or added regression tests for bugfixes.
- [n/A] `cargo test` succeeds
- [n/A] Clippy is happy: `cargo +nightly clippy` succeeds
- [n/A] Rustfmt is happy: `cargo +nightly fmt` succeeds

Closes #88

Author: bors[bot]

README.md

@@ -75,7 +75,7 @@ More detailed information is available in the [documentation]. :-)
 
 Other crates that might be useful in testing command line programs.
 * [dir-diff][dir-diff] for testing file side-effects.
-* [tempdir][tempdir] for scratchpad directories.
+* [tempfile][tempfile] for scratchpad directories.
 * [duct][duct] for orchestrating multiple processes.
 
 ## License
@@ -99,5 +99,5 @@ conditions.
 [Documentation]: https://docs.rs/assert_cli
 [Environment]: https://github.com/Freyskeyd/environment
 [dir-diff]: https://crates.io/crates/dir-diff
-[tempdir]: https://crates.io/crates/tempdir
+[tempfile]: https://crates.io/crates/tempfile
 [duct]: https://crates.io/crates/duct