Update ReadMe file

ReadMe.md

@@ -1,6 +1,6 @@
 <h1>Dumber</h1>
 
-`dumber`, a (not so dumb) command line tool for **d**(igital n)**umber**(ing) Markdown document sections and creation of a table of contents accordingly on demand.
+`dumber`, a (not so dumb) command line tool for **d**(igital n)**umber**(ing) Markdown document sections and creation of table(s) of contents accordingly.
 
 With `dumber` (you already use `git`, don't you?) you can *add* or *remove* to your Mardown files:
 
@@ -9,18 +9,17 @@ With `dumber` (you already use `git`, don't you?) you can *add* or *remove* to y
 
 See an [example](./example.md).
 
-_N.B._ :Not yet tested and implemented for UTF8.
+_N.B._ : The table of content generation is not tested and implemented for UTF8 yet.
 
 ## 1. Installation
 
-Install `dumber` from Github:
-
 ```
-go install github.com/MichelBoucey/dumber@latest
+make install
 ```
 
 ## 2. Usage
 
+### 2.1. Command line options
 ```
 user@machine $ dumber -h
 Usage: dumber [OPTION] FILE
@@ -31,10 +30,16 @@ Usage: dumber [OPTION] FILE
   -w    Write section numbers to the .md file (default to stdout)
 ```
 
-To add a table of contents you have to add a line with the HTML comment below, where you want the table of contents to appear:
+### 2.2. Add table(s) of content
+
+To add a table of contents you have to add a line with the HTML comment **&lt;!-- Toc --!&gt;**, where you want a table of contents to appear:
 
 ```
 <!-- ToC -->
+- [1.](#1-installation) Installation
+- [2.](#2-usage) Usage
+    - [2.1.](#21-options) Options
+    - [2.2.](#22-add-table(s)-of-content) Add table(s) of content
 ```
 
 The table of contents will be written just after the HTML comment line. And you can add this comment line as many times as you want, if you are, like me, a big fan of tables of contents, or if the length of your document needs a second table of contents at its end.