rename function checkconfig to is_valid?

bin/mpw

@@ -128,13 +128,11 @@ end.parse!
 # Main
 # --------------------------------------------------------- #
 
-config      = MPW::Config.new(options[:config])
-check_error = config.checkconfig
-
-cli = MPW::Cli.new(config)
+config = MPW::Config.new(options[:config])
+cli    = MPW::Cli.new(config)
 	
 # Setup a new config 
-if not check_error or not options[:setup].nil?
+if not config.is_valid? or not options[:setup].nil?
 	cli.setup(lang)
 elsif not config.check_gpg_key?
 	cli.setup_gpg_key

lib/mpw/config.rb

@@ -98,18 +98,19 @@ class Config
 
 	# Check the config file
 	# @rtrn: true if the config file is correct
-	def checkconfig
+	def is_valid?
 		config      = YAML::load_file(@config_file)
 		@key        = config['config']['key']
 		@lang       = config['config']['lang']
 		@wallet_dir = config['config']['wallet_dir']
 
-		if @key.empty? or @wallet_dir.empty? 
-			raise I18n.t('error.config.check')
-		end
+		raise if @key.empty? or @wallet_dir.empty?
+			
 		I18n.locale = @lang.to_sym
-	rescue Exception => e 
-		raise "#{I18n.t('error.config.check')}\n#{e}"
+
+		return true
+	rescue
+		return false
 	end
 
 	# Check if private key exist

lib/mpw/ui/cli.rb

@@ -35,7 +35,8 @@ class Cli
 		I18n.locale = language.to_sym
 
 		@config.setup(key, lang, wallet_dir)
-		@config.checkconfig
+
+		raise I18n.t('error.config.check') if not @config.is_valid?
 
 		puts "#{I18n.t('form.setup_config.valid')}".green
 	rescue Exception => e