Fix loading setting and throw appropriate error

Author: Gopal Adhikari

bin/argonaut

@@ -13,8 +13,7 @@ require 'optparse'
 
 # By default show user's reservations if no arguments are supplied
 options = { action: 'list_reservations' }
-
-options.merge! Argonaut::Settings.read_config['options']
+options.merge! Argonaut::Settings.config[:options]
 
 begin
   OptionParser.new do |opts|

lib/argonaut/gateway.rb

@@ -7,6 +7,7 @@ class Gateway
 
     attr_reader :api_token
     attr_reader :url_root
+    ERROR_MESSAGE = 'Could not load settings file ~/.argonaut.yml'.freeze
 
     # Initializes the HTTP gateway to connect to argonaut's API endpoint
     # The consumer of this API can supply an API token and
@@ -43,12 +44,15 @@ def config
       }
 
       if ENV['ARGONAUT_API_TOKEN'].nil?
-        raise Argonaut::Exceptions::InvalidConfigurationError.new 'Could not get API token required to connect to Argonaut'
+        raise Argonaut::Exceptions::InvalidConfigurationError.new ERROR_MESSAGE
       end
 
       if ENV['ARGONAUT_URL_ROOT'].nil?
-        raise Argonaut::Exceptions::InvalidConfigurationError.new 'Could not get Argonaut URL root'
+        raise Argonaut::Exceptions::InvalidConfigurationError.new ERROR_MESSAGE
       end
+    rescue Argonaut::Exceptions::InvalidConfigurationError => ice
+      puts ice.message
+      exit(2)
     end
 
     def url_from_path(path)

lib/argonaut/settings.rb

@@ -7,7 +7,7 @@ def self.config
     private_class_method
 
     def self.read_config
-      YAML.load_file("#{Dir.home}/.argonaut.yml")
+      YAML.load_file("#{Dir.home}/.argonaut.yml").with_indifferent_access
     rescue
       { options: {
           colorize_rows: true,