read pwd.yml from program folder

src/pmng.cr

@@ -25,7 +25,7 @@ VERSION = "0.1.0"
 
 begin
   OptionParser.parse do |parser|
-    parser.banner = "Welcome to The Beatles App!"
+    parser.banner = "pmng -- ver.: #{VERSION}\nThe very simple password manager for humans\n"
 
     parser.on "-v", "--version", "Show version" do
       puts "Version #{VERSION}"
@@ -50,16 +50,21 @@ rescue ex
   puts ex.message, ""
 end
 
-if !File.exists?("pwd.yml")
+password_file_path = PROGRAM_NAME.split("/")
+password_file_path.pop
+password_file_path.insert(-1, "pwd.yml")
+password_file_path = password_file_path.join("/")
+
+if File.exists?(password_file_path)
+  yaml = File.open(password_file_path) do |file|
+    YAML.parse(file)
+  end
+else
   puts "No password.yml file exists."
 
   exit(1)
 end
 
-yaml = File.open("pwd.yml") do |file|
-  YAML.parse(file)
-end
-
 new_array = [] of Password
 count = 0
 while count < yaml.size