Updated github actions stuff

split CI into seperate files for "builds" and "warnings". also added
.github/ to cargo.toml to exclude from going to crates.io.

.github/workflows/builds.yml

@@ -0,0 +1,30 @@
+on: push
+
+name: Builds
+
+jobs:
+  ci:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test

.github/workflows/warnings.yml

@@ -1,6 +1,6 @@
 on: push
 
-name: Continuous integration
+name: Warnings
 
 jobs:
   ci:

Cargo.toml

@@ -7,6 +7,7 @@ license-file = "LICENSE"
 description = "A tetris clone running on a Novation Launchpad Mk2 MIDI controller"
 repository = "https://github.com/BobbyBobson4888/lp_tetris"
 readme = "README.md"
+exclude = [".github/*"]
 
 [dependencies]
 midir = "0.5.0"