Extracted checks into a tools directory.

Having the checks duplicated between .git-hooks and .travis.yml was a
recipe for them to diverge eventually. This is somewhat tidier, and
creates a clear convention for any future tools-like scripts.

I didn't do the same to install steps, as they're a lot more sensitive to the
specific environment - Travis requires different things from Github, which
requires different things from CircleCI, which requires different things from a
local environment.

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/check-lints b/tools/check-lints
new file mode 100755
index 0000000..1314896
--- /dev/null
+++ b/tools/check-lints
@@ -0,0 +1,8 @@
+#!/bin/bash -ex
+
+# tools/check-lints
+#
+# Checks that the code in this project passes style checks.
+
+cargo fmt -- --check
+cargo clippy -- --deny warnings