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rust/clock/README.md

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+# Clock
+
+Welcome to Clock on Exercism's Rust Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+Implement a clock that handles times without dates.
+
+You should be able to add and subtract minutes to it.
+
+Two clocks that represent the same time should be equal to each other.
+
+## Rust Traits for `.to_string()`
+
+You will also need to implement `.to_string()` for the `Clock` struct.
+We will be using this to display the Clock's state.
+You can either do it via implementing it directly or using the [Display trait][display-trait].
+
+If so, try implementing the [Display trait][display-trait] for `Clock` instead.
+
+Traits allow for a common way to implement functionality for various types.
+
+For additional learning, consider how you might implement `String::from` for the `Clock` type.
+You don't have to actually implement this—it's redundant with `Display`, which is generally the
+better choice when the destination type is `String`—but it's useful to have a few type-conversion
+traits in your toolkit.
+
+[display-trait]: https://doc.rust-lang.org/std/fmt/trait.Display.html
+
+## Source
+
+### Created by
+
+- @sacherjj
+
+### Contributed to by
+
+- @attilahorvath
+- @coriolinus
+- @cwhakes
+- @danieljl
+- @eddyp
+- @efx
+- @ErikSchierboom
+- @felix91gr
+- @kunaltyagi
+- @lutostag
+- @nfiles
+- @petertseng
+- @rofrol
+- @shaaraddalvi
+- @stringparser
+- @tmccombs
+- @xakon
+- @ZapAnton
+
+### Based on
+
+Pairing session with Erin Drummond