add Dependencies in README.md

README.md

@@ -7,20 +7,42 @@ an ed-based client by Solene Rapenne (gopher://bitreich.org/1/usr/solene/).
 
 `gophed` is distributed under the MIT License. A copy of the LICENSE is
 available in the repo.
+
+   Dependencies
+==================
+
+`gophed` requires only:
+
+  - a POSIX shell (/bin/sh)
+  - netcat (nc)
+  - ed (the standard editor!)
+  - awk
+  - cut
+  - sed
+
+
+   Usage   
+===========
  
 The first time you run `gophed` you need to initialise it via:
 
+```
   ./gophed -i
+```
 
 This will create a few symlinks in the current folder, namely `g`, `v`,
 and `d`,  which will be used as `gophed` commands. Once `gophed` has
 been initialised, you can start visiting some gopherholes:
 
+```
   ./gophed / kalos.mine.nu 70
+```
 
 or equivalently:
 
+```
   ./v / kalos.mine.nu 70
+```
 
 This command will download the corresponding resource, and print it on
 output with line numbers. An excerpt is reported below:
@@ -51,8 +73,11 @@ can change the default prompt to any single character by changing the
 PROMPT variable. Now, if you want to visit the selector at line 23, you
 would type:
 
+```
   !./g % 24 [ENTER]
 
+```
+
 at the prompt. This will effectively spawn another `gophed` instance,
 telling it to get the selector at line 23 in the current document, and
 to load the corresponding resource. In this case we will have something
@@ -86,34 +111,46 @@ like:
 
 Well, if you want now to go to the resource at line 17, you would type: 
 
+```
   !./g % 17 [ENTER]
+```
 
 when you are done with viewing the current resource, you just type:
 
+```
   q [ENTER]
+```
 
 at the `gophed` prompt (well, that one is indeed ed(1) prompt...), and
 you will be back at the gopher resources you had visited before. Typing 
 
+```
   q [ENTER]
+```
 
 again will bring you back in history again. If you give a `q` command on
 the first page, you will leave `gophed`. If you would instead like to
 save the resource pointed by a selector, you will use the command:
 
+```
   !./d % NUMBER [ENTER]
+```
 
 where NUMBER is the number of the line where the selector appears in the
 current page. The resource will be saved at "HOSTNAME/URI" where
 HOSTNAME is the name of the host and URI is the path to the resource.
 If you don't remember which line is which, you can just give:
 
+```
   %n [ENTER]
+```
 
 at the prompt. If you don't remember which resource you are currently
 visiting, typing: 
 
+```
  f [ENTER]
+```
 
 at the `gophed` prompt will give some hints. If you are an ed(1) user,
 you will totally understand what we are up to here, and probably will
@@ -121,8 +158,6 @@ now have a good laugh. If you don't know how to use ed(1), instead, then
 this is probably the right time to start learning it. Remember: ed(1) is
 the standard editor, and an awesome one at that...
 
-HND
+HH
 
 KatolaZ
-
-