Added cli options and help command, WIP readme update

lib/dartboard_runner.dart

@@ -2,14 +2,19 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'package:dartboard_resume/render.dart';
+import 'package:dartboard_resume/utils.dart';
 import 'package:hotreloader/hotreloader.dart';
 import 'package:toml/toml.dart';
 
 StreamSubscription<FileSystemEvent>? fileStreamSub;
 StreamSubscription<String>? stdinStreamSub;
 
-Future<void> dartboardRun(HotReloader? reloader) async {
-  const String tomlFilePath = "resume.toml";
+Future<void> dartboardRun(HotReloader? reloader, List<String> arguments) async {
+  final result = getTomlFromArgs(arguments);
+  if (!result.success) {
+    exitRunner(reloader);
+  }
+  final resumeTomlFile = result.file!;
 
   if (reloader != null) {
     stdout.writeln('Hot reload enabled!');
@@ -17,22 +22,18 @@ Future<void> dartboardRun(HotReloader? reloader) async {
 
   ProcessSignal.sigint.watch().listen((_) {
     stdout.writeln('SIGINT received. Exiting gracefully...');
-    fileStreamSub?.cancel();
-    stdinStreamSub?.cancel();
-    // Perform cleanup or other necessary actions here
-    reloader?.stop();
-    exit(0); // Exit with code 0 to indicate a successful termination
+    exitRunner(reloader);
   });
 
   stdinStreamSub = getUserInputStream().listen(
     (event) {
       if (event == "r") {
         stdout.writeln("Triggering pdf render...");
-        createDocument(tomlFilePath);
+        createDocument(resumeTomlFile.path);
       }
       if (event == "p") {
         stdout.writeln("Current toml map:");
-        stdout.writeln(TomlDocument.loadSync(tomlFilePath).toMap());
+        stdout.writeln(TomlDocument.loadSync(resumeTomlFile.path).toMap());
       }
       if (event == "q") {
         stdout.writeln('Exiting...');
@@ -46,14 +47,14 @@ Future<void> dartboardRun(HotReloader? reloader) async {
   );
 
   if (FileSystemEntity.isWatchSupported) {
-    final fileStream = File(tomlFilePath).watch(events: FileSystemEvent.modify);
+    final fileStream = resumeTomlFile.watch(events: FileSystemEvent.modify);
     fileStreamSub = fileStream.listen((e) {
-      createDocument(tomlFilePath);
+      createDocument(resumeTomlFile.path);
     });
     stdout.writeln('Watching for file changes.');
   } else {
     stdout.writeln('File watch is not supported. Exiting upon completion.');
-    createDocument(tomlFilePath);
+    createDocument(resumeTomlFile.path);
   }
 }
 
@@ -80,3 +81,11 @@ void createDocument(String tomlFilePath) {
   renderPdf(tomlFilePath, force: true);
   refreshViewer();
 }
+
+void exitRunner(HotReloader? reloader) {
+  fileStreamSub?.cancel();
+  stdinStreamSub?.cancel();
+  // Perform cleanup or other necessary actions here
+  reloader?.stop();
+  exit(0); // Exit with code 0 to indicate a successful termination
+}