Use Github Actions instead of Travis CI

PR-URL: #41

Author: tshemsedinov

.gitattributes

@@ -0,0 +1 @@
+* -text

.github/workflows/test.yml

@@ -0,0 +1,32 @@
+name: Testing CI
+
+on: pull_request
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        node:
+          - 12
+          - 14
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+      - run: npm ci
+      - run: npm test

.travis.yml

@@ -1,6 +1,6 @@
 # Concolor
 
-[![TravisCI](https://travis-ci.org/metarhia/concolor.svg?branch=master)](https://travis-ci.org/metarhia/concolor)
+[![CI Status](https://github.com/metarhia/concolor/workflows/Testing%20CI/badge.svg)](https://github.com/metarhia/concolor/actions?query=workflow%3A%22Testing+CI%22+branch%3Amaster)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/6f4f133090d64f178d099f86521ec117)](https://www.codacy.com/app/metarhia/concolor)
 [![NPM Version](https://badge.fury.io/js/concolor.svg)](https://badge.fury.io/js/concolor)
 [![NPM Downloads/Month](https://img.shields.io/npm/dm/concolor.svg)](https://www.npmjs.com/package/concolor)