Add Github Actions CI specification

.github/workflows/rust.yml

@@ -0,0 +1,41 @@
+name: Rust CI
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust: ["1.34.2", stable, beta, nightly]
+        features: [ "", "std" ]
+    steps:
+    - uses: actions/checkout@v2
+    - run: rustup default ${{ matrix.rust }}
+    - name: build
+      run: >
+        cargo build --verbose --no-default-features --features "$FEATURES"
+    - name: test
+      run: >
+        cargo test --tests --benches --no-default-features --features "$FEATURES"
+      if: ${{ matrix.rust != '1.34.2' }}
+      env:
+        FEATURES: ${{ matrix.features }}
+  rustfmt:
+    runs-on: ubuntu-latest
+    skip-if: true
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+        components: rustfmt
+    - name: Run rustfmt check
+      uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+        args: -- --check
+

.gitignore

@@ -1,4 +1,5 @@
 target
 *.sublime-*
 .*
+!.github
 Cargo.lock

.travis.yml

@@ -1,16 +0,0 @@
-language: rust
-rust:
-  - 1.34.2
-  - stable
-  - nightly
-env:
-  matrix:
-    - FEATURES=''
-    - FEATURES='std'
-script:
-  - if [ "${TRAVIS_RUST_VERSION}" == "1.34.2" ]; then
-      cargo build -v --features="$FEATURES";
-    else
-        cargo test -v --features="$FEATURES";
-        cargo build --benches -v --features="$FEATURES";
-    fi