update man-page

CommandLines.cpp

@@ -41,8 +41,7 @@ void Print_H(hifiasm_opt_t* asm_opt)
     fprintf(stderr, "    -v            show version number\n");
     fprintf(stderr, "    -h            show help information\n");
     fprintf(stderr, "Example: ./hifiasm -o NA12878.asm -t 32 NA12878.fq.gz\n");
-
-    
+    fprintf(stderr, "See `man ./hifiasm.1' for detailed description of these command-line options.\n");
 }
 
 void init_opt(hifiasm_opt_t* asm_opt)

README.md

@@ -96,7 +96,8 @@ In this example, hifiasm will remove 20 bases from both ends of each read.
 
 ## Getting Help
 
-The `-h` option of hifiasm provides detailed description of options. If you
+For detailed description of options, please see `man ./hifiasm.1'.
+The `-h` option of hifiasm also provides simple description of options. If you
 have further questions, please raise an issue at the issue page.
 
 ## Limitations and future works