Move from Travis CI to Github Actions

Author: krasun

.github/workflows/build.yml

@@ -0,0 +1,31 @@
+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.11
+
+    - name: Build
+      run: go build -v .
+
+    - name: Test
+      run: go test -v . -race -cover -coverprofile=coverage.txt
+
+    - name: Upload coverage report
+      uses: codecov/codecov-action@v2
+      with:
+        file: ./coverage.txt
+        fail_ci_if_error: true
+        verbose: true

README.md

@@ -1,6 +1,6 @@
 # lsmtree
 
-[![Build Status](https://app.travis-ci.com/krasun/lsmtree.svg?branch=main)](https://app.travis-ci.com/krasun/lsmtree)
+[![Build](https://github.com/krasun/lsmtree/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/krasun/lsmtree/actions/workflows/build.yml)
 [![codecov](https://codecov.io/gh/krasun/lsmtree/branch/main/graph/badge.svg?token=8NU6LR4FQD)](https://codecov.io/gh/krasun/lsmtree)
 [![Go Report Card](https://goreportcard.com/badge/github.com/krasun/lsmtree)](https://goreportcard.com/report/github.com/krasun/lsmtree)
 [![GoDoc](https://godoc.org/https://godoc.org/github.com/krasun/lsmtree?status.svg)](https://godoc.org/github.com/krasun/lsmtree)