Config documentation (#35)

* initial config documentation

* initial config documentation

* added descriptions and example

lib/token_master/config.rb

@@ -1,5 +1,11 @@
 module TokenMaster
+  # `TokenMaster::Config` manages the configuration options for tokenable actions. These can be set with the initializer provided with the generator. Default values will be used if options are not specified
   class Config
+
+    # Provides default values for a tokenable action
+    # `token_lifetime` is an integer representing the number of days before the token expires
+    # `required_params` is an array of symbols, e.g., `[:password, :password_confirmation]`
+    # `token_length is an integer representing the number of characters in the token
     DEFAULT_VALUES = {
       token_lifetime: 14,
       required_params: [],
@@ -8,26 +14,52 @@ class Config
 
     attr_accessor :options
 
+    # Creates a new instance of `TokenMaster::Config`
     def initialize
       @options = {}
     end
 
+    # Sets the key-value pairs needed to complete a tokenable action
+    # Key-value pairs used to complete a tokenable action are the `token_lifetime`, `required_params` (can be blank), and the `token_length`
+    # @example Set a Tokenable Option
+    #   config.add_tokenable_options(:invite, { token_lifetime: 10, required_params: [:password, :password_confirmation], token_length: 12 }) #=>
+    #   { invite: {
+    #       token_lifetime: 10,
+    #       required_params: [:password, :password_confirmation],
+    #       token_length: 12
+    #      }
+    #    }
+    # @param [Symbol] key the tokenable action
+    # @param [Symbol=>[Integer, String, Array]] params the key-value pairs
     def add_tokenable_options(key, **params)
       @options[key] = params
     end
 
+    # Retrieves the `required_params` for a tokenable_action, either as set by the application, or by the default
+    # Used to update model attributes as needed for a given tokenable action
+    # @param [Symbol] key the tokenable action
+    # @return [Array] the `required_params` for a tokenable action
     def get_required_params(key)
       get_option(key, :required_params)
     end
 
+    # Retrieves the `token_lifetime` for a tokenable action, either as set by the application, or by the default
+    # @param [Symbol] key the tokenable action
+    # @return [Integer] the `token_lifetime` for a tokenable action
     def get_token_lifetime(key)
       get_option(key, :token_lifetime)
     end
 
+    # Retrieves the `token_length` for a tokenable action, either as set by the application, or by the default
+    # @param [Symbol] key the tokenable action
+    # @return [Integer] the `token_length` for a tokenable action
     def get_token_length(key)
       get_option(key, :token_length)
     end
 
+    # Determines whether options are provided for a tokenable action
+    # @param [Symbol] key the tokenable action
+    # @return [Boolean] `true` => options are set; `false` => options are not set
     def options_set?(key)
       @options.key? key
     end