Move sinatra token app to a bin file with instructions

.gitignore

@@ -46,5 +46,3 @@ pkg
 
 # For rubinius:
 #*.rbc
-
-get_access_token_sinatra_app.rb

.rvmrc

@@ -1,2 +1,2 @@
-rvm use ree-1.8.7-2011.03@github-v3-api --create --install
+rvm use ruby-1.9.2-p180@github-v3-api --create --install
 bundle check

bin/github-v3-api-get-token

@@ -0,0 +1,55 @@
+#!/usr/bin/env ruby
+
+puts <<EOF
+This script will start a sinatra web app on your machine that can log you in to
+GitHub and show you your access token. This access token can then be used with
+the GitHubV3API.
+
+Once the server has started, just browse to http://localhost:4567. You may be
+prompted to log in to GitHub and/or authorize the app.  After that, your access
+token will be displayed to you.
+
+You will need to create a GitHub Application in order to use this. Just go to
+https://github.com/account/applications/new and fill out the form. Pick any name
+you want, and use http://localhost:4567 and
+http://localhost:4567/auth/github/callback for the Main and Callback URLs,
+respectively. After creating the application, use the generated client id and
+client secret by running this script with the OAUTH_GITHUB_CLIENT_ID and
+OATH_GITHUB_CLIENT_SECRET environment variables set.
+EOF
+
+print "Ready to go? (y/N): "
+
+answer = STDIN.gets.chomp
+
+unless answer =~ /^y(es)?$/i
+  exit(1)
+end
+
+unless ENV['OAUTH_GITHUB_CLIENT_ID'] && ENV['OAUTH_GITHUB_CLIENT_SECRET']
+  raise "Please set the OAUTH_GITHUB_CLIENT_ID and OAUTH_GITHUB_CLIENT_SECRET " \
+    + "environment variables before running this."
+end
+
+require 'rubygems'
+require 'bundler/setup'
+Bundler.setup(:sinatra)
+require 'sinatra'
+require 'openssl'
+require 'omniauth'
+
+enable :sessions
+
+use OmniAuth::Builder do
+  provider :github, ENV['OAUTH_GITHUB_CLIENT_ID'], ENV['OAUTH_GITHUB_CLIENT_SECRET'],
+    :scope => 'user,repo,gist'
+end
+
+get '/' do
+  redirect '/auth/github'
+end
+
+get '/auth/github/callback' do
+  token = request.env['omniauth.auth']['credentials']['token']
+  "Your GitHub Access Token is #{token}"
+end