- add basic CLI

src/mango.cr

@@ -1,11 +1,29 @@
 require "./server"
 require "./context"
-require "./config"
-require "./library"
-require "./storage"
-require "./logger"
+require "option_parser"
 
-config = Config.load
+VERSION = "0.1.0"
+
+config_path = nil
+
+parser = OptionParser.parse do |parser|
+	parser.banner = "Mango e-manga server/reader. Version #{VERSION}\n"
+
+	parser.on "-v", "--version", "Show version" do
+		puts "Version #{VERSION}"
+		exit
+	end
+	parser.on "-h", "--help", "Show help" do
+		puts parser
+		exit
+	end
+	parser.on "-c PATH", "--config=PATH", "Path to the config file. " \
+		"Default is `~/.config/mango/config.yml`" do |path|
+		config_path = path
+	end
+end
+
+config = Config.load config_path
 logger = MLogger.new config
 library = Library.new config.library_path, config.scan_interval, logger
 storage = Storage.new config.db_path, logger