Add bin and edit workflow

bin/gems/rouge-4.7.0/lib/rouge/demos/objective_c

@@ -0,0 +1,18 @@
+@interface Person : NSObject {
+  @public
+  NSString *name;
+  @private
+  int age;
+}
+
+@property(copy) NSString *name;
+@property(readonly) int age;
+
+-(id)initWithAge:(int)age;
+@end
+
+NSArray *arrayLiteral = @[@"abc", @1];
+NSDictionary *dictLiteral = @{
+  @"hello": @"world",
+  @"goodbye": @"cruel world"
+};