argcargv.i cosmetic updates

Lib/ruby/argcargv.i

@@ -1,21 +1,18 @@
 /* ------------------------------------------------------------
- * --- Argc & Argv ---
- * ------------------------------------------------------------ */
- 
-/* ------------------------------------------------------------
+ * SWIG library containing argc and argv multi-argument typemaps
 
-   Use it as follow:
+   Use it as follows:
 
      %apply (int ARGC, char **ARGV) { (size_t argc, const char **argv) }
 
      %inline %{
 
-     int mainApp(size_t argc, const char **argv) 
+     int mainApp(size_t argc, const char **argv)
      {
        return argc;
      }
 
-   then in the ruby side:
+   then from ruby:
 
      args = ["asdf", "asdf2"]
      mainApp(args);
@@ -31,7 +28,7 @@
     VALUE *ptr = RARRAY_PTR($input);
     for (i=0; i < size; i++, ptr++) {
       $2[i]= StringValuePtr(*ptr);
-    }    
+    }
     $2[i]=NULL;
   } else {
     $1 = 0; $2 = 0;