migrate from Travis CI into Circle CI

Author: floydpink

.circleci/config.yml

@@ -0,0 +1,69 @@
+version: 2.1
+
+jobs:
+  build_linux:
+    docker:
+      - image: circleci/node:14
+    steps:
+      - checkout
+      - run:
+          name: Update NPM
+          command: sudo npm install -g npm@latest
+      - run:
+          name: Install Dependencies
+          command: |
+            sudo npm install -g grunt-cli codecov
+      - restore_cache:
+          key: node-cache-{{ checksum "package-lock.json" }}
+      - run:
+          name: Install NPM packages
+          command: npm ci
+      - save_cache:
+          key: node-cache-{{ checksum "package-lock.json" }}
+          paths:
+            - ./node_modules
+      - run:
+          name: Run tests
+          command: grunt ci
+      - run:
+          name: Push Coverage
+          command: codecov
+  build_mac:
+    macos:
+      xcode: 12.3.0
+    steps:
+      - checkout
+      - run:
+          name: Update NPM
+          command: sudo npm install -g npm@latest
+      - run:
+          name: Install Dependencies
+          command: |
+            sudo npm install -g grunt-cli codecov
+      - restore_cache:
+          key: node-cache-{{ checksum "package-lock.json" }}
+      - run:
+          name: Install NPM packages
+          command: npm ci
+      - save_cache:
+          key: node-cache-{{ checksum "package-lock.json" }}
+          paths:
+            - ./node_modules
+      - run:
+          name: Run tests
+          command: grunt ci
+
+workflows:
+  version: 2
+  build:
+    jobs:
+      - build_linux:
+          filters:
+            branches:
+              ignore:
+                - gh-pages
+      - build_mac:
+          filters:
+            branches:
+              ignore:
+                - gh-pages

.travis.yml

@@ -1,7 +1,7 @@
 [lzwCompress.js](http://floydpink.github.io/lzwCompress.js/)
 ==============
 
-[![npm](https://img.shields.io/npm/v/lzwcompress.svg)](https://www.npmjs.com/package/lzwcompress) [![Travis](https://img.shields.io/travis/floydpink/lzwCompress.js.svg)](https://travis-ci.org/floydpink/lzwCompress.js) [![Appveyor](https://ci.appveyor.com/api/projects/status/o9414h87kwob2equ/branch/main?svg=true)](https://ci.appveyor.com/project/floydpink/lzwcompress-js/branch/main) [![Coverage Status](https://coveralls.io/repos/github/floydpink/lzwCompress.js/badge.svg?branch=main)](https://coveralls.io/github/floydpink/lzwCompress.js?branch=main) [![codecov](https://codecov.io/gh/floydpink/lzwCompress.js/branch/main/graph/badge.svg)](https://codecov.io/gh/floydpink/lzwCompress.js) [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Ffloydpink%2FlzwCompress.js.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Ffloydpink%2FlzwCompress.js?ref=badge_shield)
+[![npm](https://img.shields.io/npm/v/lzwcompress.svg)](https://www.npmjs.com/package/lzwcompress) [![CircleCI](https://img.shields.io/circleci/build/github/floydpink/lzwCompress.js/main)](https://app.circleci.com/pipelines/github/floydpink/lzwCompress.js?branch=main) [![Appveyor](https://ci.appveyor.com/api/projects/status/o9414h87kwob2equ/branch/main?svg=true)](https://ci.appveyor.com/project/floydpink/lzwcompress-js/branch/main) [![Coverage Status](https://coveralls.io/repos/github/floydpink/lzwCompress.js/badge.svg?branch=main)](https://coveralls.io/github/floydpink/lzwCompress.js?branch=main) [![codecov](https://codecov.io/gh/floydpink/lzwCompress.js/branch/main/graph/badge.svg)](https://codecov.io/gh/floydpink/lzwCompress.js) [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Ffloydpink%2FlzwCompress.js.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Ffloydpink%2FlzwCompress.js?ref=badge_shield)
 
 > Lossless LZW compression/decompression implemented in JavaScript for strings/JSON/JS objects.