SLACK_ADMIN_ACCESS_TOKEN is not documented

[zachlatta]

Trying to configure a fresh install from instructions in the README.

[zrl@charmander monolith]$ docker-compose run api rails db:create db:migrate   
Starting monolith_bundle_1 ...         
Starting monolith_cache_1 ...          
Starting monolith_bundle_1             
Starting monolith_bundle_1 ... done    
Database 'app_development' already exists                                      
Database 'app_test' already exists     
rails aborted!                         
KeyError: key not found: "SLACK_ADMIN_ACCESS_TOKEN"                            
(erb):50:in `fetch'                    
(erb):50:in `<main>'                   
/bundle/gems/railties-5.0.3/lib/rails/application.rb:391:in `secrets'          
/usr/src/app/config/initializers/cloud9_client.rb:1:in `<top (required)>'      
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:287:in `load'                                                                              
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:287:in `block in load'                                                                     
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:259:in `load_dependency'                                                                   
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:287:in `load'                                                                              
/bundle/gems/railties-5.0.3/lib/rails/engine.rb:648:in `block in load_config_initializer'                                                                      
/bundle/gems/activesupport-5.0.3/lib/active_support/notifications.rb:166:in `instrument'                                                                       
/bundle/gems/railties-5.0.3/lib/rails/engine.rb:647:in `load_config_initializer'                                                                               
/bundle/gems/railties-5.0.3/lib/rails/engine.rb:612:in `block (2 levels) in <class:Engine>'                                                                    
/bundle/gems/railties-5.0.3/lib/rails/engine.rb:611:in `each'                  
/bundle/gems/railties-5.0.3/lib/rails/engine.rb:611:in `block in <class:Engine>'                                                                               
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:30:in `instance_exec'   
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:30:in `run'             
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:55:in `block in run_initializers'                                                                       
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:44:in `each'            
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:44:in `tsort_each_child'                                                                                
/bundle/gems/railties-5.0.3/lib/rails/initializable.rb:54:in `run_initializers'                                                                                
/bundle/gems/railties-5.0.3/lib/rails/application.rb:352:in `initialize!'      
/usr/src/app/config/environment.rb:5:in `<top (required)>'                     
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `require'                                                                           
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `block in require'                                                                  
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:259:in `load_dependency'                                                                   
/bundle/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `require'                                                                           
/bundle/gems/railties-5.0.3/lib/rails/application.rb:328:in `require_environment!'                                                                             
/bundle/gems/railties-5.0.3/lib/rails/application.rb:448:in `block in run_tasks_blocks'                                                                        
/bundle/gems/railties-5.0.3/lib/rails/commands/rake_proxy.rb:14:in `block in run_rake_task'                                                                    
/bundle/gems/railties-5.0.3/lib/rails/commands/rake_proxy.rb:11:in `run_rake_task'                                                                             
/bundle/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:51:in `run_command!'                                                                          
/bundle/gems/railties-5.0.3/lib/rails/commands.rb:18:in `<top (required)>'     
bin/rails:4:in `require'               
bin/rails:4:in `<main>'                
Tasks: TOP => db:migrate => environment                                        
(See full trace by running task with --trace)                                  

README currently doesn't mention anything about SLACK_ADMIN_ACCESS_TOKEN.