Merge pull request #18 from urbit/eamsden/CONTRIBUTING

Add brief CONTRIBUTING.md file

rust/ares/CONTRIBUTING.md

@@ -0,0 +1,21 @@
+# Contributing to New Mars
+
+## Style
+Hoon should generally follow the kernel style.
+
+Rust code must pass `cargo fmt --check`.
+
+## Branch naming
+
+Please name your branch `<your gh username>/<something descriptive>`:
+An exception is given if you have established use of a different personal prefix
+(e.g. your first name) throughout the codebase.
+
+Examples:
+
+- `eamsden/cap-jet`
+- `philip/optimized-jam-algorithm`
+
+## PR reviews
+Don't merge without them, don't forget to do them for others.
+