wta.c: add basic argument handling

src/wta.c

@@ -13,7 +13,16 @@
 #define c_end "\033[0m"
 
 
-int main()
+int main(const int argc, const char **argv)
 {
+  if (2 == argc) {
+    if ('-' == argv[1][0] && 'h' == argv[1][1] && '\0' == argv[1][2]) {
+      printf("wte - what to eat\na simple decision making tool for food\n");
+    } else {
+      printf("unrecognized option, try %s -h\n", *argv);
+    }
+    goto exit_main;
+  }
+exit_main:
   return 0;
 }