README.md: document HTML generation

Refine the documentation of the result.md and explain how to generate HTML
with pandoc.
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>

README.md

@@ -23,12 +23,28 @@ INFO main: 0 dropped(s), 1 failure(s), 93 ignored(s), 106 known u-boot limitatio
 ```
 
 ## Usage
-Usage to generate a "result md" is such. `python3 parser.py <log_file.ekl> <seq_file.seq>`
-If you do no provided any command line arguments it will use `sample.ekl` and `sample.seq`.
-The output filename can be specified with `--md <filename>`.
+
+Usage to generate a `result.md` is such:
+
+``` {.sh}
+$ python3 parser.py <log_file.ekl> <seq_file.seq>
+```
+
+If you do no provided any command line arguments it will use `sample.ekl` and
+`sample.seq`. The output filename can be specified with the `--md` option:
+
+``` {.sh}
+$ ./parser.py --md out.md ...
+```
 
 An online help is available with the `-h` option.
 
+The generated `result md` can be easily converted to HTML using `pandoc` with:
+
+``` {.sh}
+$ pandoc -oresult.html result.md
+```
+
 ### Custom search
 For a custom Key:value search, the next two arguments *MUST be included together.* The program will search and display files that met that constraint, without the crosscheck, and display the names, guid, and key:value to the command line. `python3 parser.py <file.ekl> <file.seq> <search key> <search value>`