update CI and go modules

Author: mcuadros

.github/workflows/test.yml

@@ -0,0 +1,14 @@
+on: [push, pull_request]
+name: Test
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v1
+      with:
+        go-version: 1.14.x
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Test
+      run: go test ./...

.travis.yml

@@ -1,4 +1,4 @@
-go-jsonschema-generator [![Build Status](https://travis-ci.org/mcuadros/go-jsonschema-generator.png?branch=master)](https://travis-ci.org/mcuadros/go-jsonschema-generator) [![GoDoc](http://godoc.org/github.com/mcuadros/go-jsonschema-generator?status.png)](http://godoc.org/github.com/mcuadros/go-jsonschema-generator)
+go-jsonschema-generator [![Build Status](https://img.shields.io/github/workflow/status/mcuadros/go-jsonschema-generator/Test.svg)](https://github.com/mcuadros/go-jsonschema-generator/actions) [![GoDoc](http://godoc.org/github.com/mcuadros/go-jsonschema-generator?status.png)](https://pkg.go.dev/github.com/mcuadros/go-jsonschema-generator)
 ==============================
 
 Basic [json-schema](http://json-schema.org/) generator based on Go types, for easy interchange of Go structures across languages.

README.md

@@ -0,0 +1,8 @@
+module github.com/mcuadros/go-jsonschema-generator
+
+go 1.14
+
+require (
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f
+)

go.mod

@@ -0,0 +1,7 @@
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=