add travis yml

.travis.yml

@@ -0,0 +1,40 @@
+language: rust
+
+rust:
+  - stable
+  - beta
+  - nightly
+  # - 1.46.0  // does not work since cargo test is executed automatically
+
+os:
+  - linux
+  - windows
+  - osx
+
+jobs:
+  fast_finish: true
+  allow_failures:
+    - rust: nightly
+    - os: windows
+  include:
+    - if: rust = stable
+      script:
+        - rustup component add rustfmt
+        - cargo fmt --all -- --check
+
+    - if: rust = stable OR rust = beta OR rust = nightly
+      script:
+        - cargo test --release --all-features
+        - cargo test --release
+        - cargo test --release --no-default-features
+
+    - if: rust = nightly
+      script:
+        - cargo test --release --doc
+        - cargo doc --all-features --no-deps
+
+    - if: rust = "1.46.0"
+      script:
+        - cargo build --release
+        - cargo build --release --no-default-features
+        - cargo build --release --all-features