Add workflow for pushing to RubyGems (#28)

Creates a workflow for publishing to the public Zendesk RubyGems account.

Uses the workflow from the public `gw` gem. `gw`'s (ruby-gem-publication readme](https://github.com/zendesk/gw/blob/main/ruby-gem-publication/README.md)

This also clears out the old travis config (unused), updates versioning to be consistent with other projects, and moves version references to a proper constant.

Author: codealchemy

.github/workflows/publish.yml

@@ -0,0 +1,12 @@
+name: Publish Gem
+
+on:
+  push:
+    tags: v*
+
+jobs:
+  call-workflow:
+    uses: zendesk/gw/.github/workflows/ruby-gem-publication.yml@main
+    secrets:
+      RUBY_GEMS_API_KEY: ${{ secrets.RUBY_GEMS_API_KEY }}
+      RUBY_GEMS_TOTP_DEVICE: ${{ secrets.RUBY_GEMS_TOTP_DEVICE }}

.travis.yml

@@ -1,14 +1,13 @@
 PATH
   remote: .
   specs:
-    ticket_sharing (2.0.1)
+    ticket_sharing (2.1.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    bump (0.4.2)
     byebug (8.2.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
@@ -43,7 +42,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bump
   byebug
   faraday (~> 1.0.0)
   rake

Gemfile.lock

@@ -1,6 +1,8 @@
 require 'bundler/setup'
 require 'bundler/gem_tasks'
-require 'bump/tasks'
+
+# Pushing to rubygems is handled by a github workflow
+ENV['gem_push'] = 'false'
 
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec)

Rakefile

@@ -1,4 +1,4 @@
-# Ticket Sharing [![Build Status](https://secure.travis-ci.org/zendesk/ticket_sharing.png)](http://travis-ci.org/zendesk/ticket_sharing)
+# Ticket Sharing [![Build Status](https://github.com/zendesk/ticket_sharing/actions/workflows/ruby.yml/badge.svg)](https://github.com/zendesk/ticket_sharing/actions/workflows/ruby.yml)
 
 A ruby implementation of the [Networked Help Desk] [1] API
 

Readme.md

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+module TicketSharing
+  VERSION = "2.1.0"
+end

lib/ticket_sharing/version.rb

@@ -1,4 +1,7 @@
-Gem::Specification.new 'ticket_sharing', '2.1.0' do |s|
+require './lib/ticket_sharing/version'
+
+Gem::Specification.new 'ticket_sharing' do |s|
+  s.version = TicketSharing::VERSION
   s.authors = ['Josh Lubaway']
   s.email = 'josh@zendesk.com'
   s.extra_rdoc_files = ['Readme.md']
@@ -12,7 +15,6 @@ Gem::Specification.new 'ticket_sharing', '2.1.0' do |s|
   s.required_ruby_version = '>= 2.1.0'
 
   s.add_development_dependency 'rake'
-  s.add_development_dependency 'bump'
   s.add_development_dependency 'webmock'
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'faraday', '~> 1.0.0'