Add GitHub actions (#45)

* Add github actions workflow for CI

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

* Add github action to block fixup commits merging

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

* Fix doc-tests

(cherry picked from commit ee72186)

Co-authored-by: Oyami-Srk <hhx.xxm@gmail.com>

Author: matthiasbeyer

.github/workflows/ci.yml

@@ -0,0 +1,83 @@
+on: [push, pull_request]
+
+name: CI
+
+jobs:
+  check:
+    name: Check
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: Run cargo check
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+
+  test:
+    needs: [check]
+    name: Test Suite
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+  clippy:
+    needs: [check]
+    name: Clippy
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: Install clippy
+        run: rustup component add clippy
+
+      - name: Run cargo clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings

.github/workflows/fixup-merge-block.yml

@@ -0,0 +1,12 @@
+on: [pull_request]
+
+name: Git Checks
+
+jobs:
+  block-fixup:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2.0.0
+    - name: Block Fixup Commit Merge
+      uses: 13rac1/block-fixup-merge-action@v2.0.0

src/lib.rs

@@ -51,7 +51,7 @@
 //! }
 //!
 //! fn main() -> Result<(), confy::ConfyError> {
-//!     let cfg = confy::load("my-app-name")?;
+//!     let cfg = confy::load("my-app-name", None)?;
 //!     Ok(())
 //! }
 //! ```