Add Travis

Author: marmistrz

.travis.yml

@@ -0,0 +1,25 @@
+language: rust
+os:
+  - osx
+  - windows
+  - linux
+rust:
+  - stable
+  - beta
+  - nightly
+cache: cargo
+before_script:
+  - if [ "$TRAVIS_RUST_VERSION" == "stable" ]; then rustup component add rustfmt clippy; fi
+script:
+  - cargo build
+  - cargo test --all
+  - if [ "$TRAVIS_RUST_VERSION" == "stable" ]; then cargo fmt --all -- --check; fi
+  - if [ "$TRAVIS_RUST_VERSION" == "stable" ]; then cargo clippy -- -D warnings; fi
+
+# See https://levans.fr/rust_travis_cache.html
+cache:
+  directories:
+    - /home/travis/.cargo
+before_cache:
+  - rm -rf /home/travis/.cargo/registry
+