Enable alternative configuration file.

src/baguette-crystal-base.cr

@@ -85,16 +85,18 @@ class Baguette::Configuration
 		OptionParser.parse do |parser|
 			parser.banner = "usage: #{PROGRAM_NAME} [-ns][--project project-name]"
 
-			parser.on "-s", "--simulation",
+			parser.on "-s", "--simulation", "Print configuration then quit." do
-				"Print configuration then quit." do
 				simulation = true
 			end
 
-			parser.on "-n", "--no-configuration",
+			parser.on "-n", "--no-configuration", "No configuration file should be read." do
-				"No configuration file should be read." do
 				no_configuration = true
 			end
 
+			parser.on "--configuration file", "Configuration file to use." do |f|
+				configuration_file = f
+			end
+
 			parser.on "-v verbosity", "--verbosity level",
 				"Verbosity level. From 0 to 4. Default: 4" do |v|
 				Baguette::Context.verbosity = v.to_i
@@ -110,7 +112,6 @@ class Baguette::Configuration
 			end
 
 			parser.on "-h", "--help", "Show this help" do
-				Baguette::Log.warning "for the first option parsing!"
 				puts parser
 				help = true
 			end