Update README.md

README.md

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 # Tunnel_C
 
-Simple Tunnel Working on C
+Simple Tunnel Working on C
-
+
-it can be used to small tunnel applications. 
+it can be used to small tunnel applications. 
-
+
+
+### Compilation using GCC
+ This software is known to have run for me under 
+ Linux/Intel, Solaris/Intel, Solaris/Sparc, SunOS/Sparc.
+
+```shell: 
+ Linux:   gcc -O2 -Wall                          tunnel.c -o tunnel
+ Solaris: gcc -O2 -Wall -lsocket -lnsl -DSOLARIS tunnel.c -o tunnel
+ SunOS:   gcc -O2 -Wall                -DSUNOS   tunnel.c -o tunnel
+```
+
+### Implementation
+#### help menu
+```bash:
+ tunnel -h 
+```
+
+#### example of HTTPS website
+```bash:
+ ./tunnel -Lr <ip_forClient_2_connect_as_public>:<public_port> <private_ip_or_local_ip_to_expose>:<private_port>
+ ./tunnel -Lr 31.220.09.177:8878 23.87.270.189:5001
+```
+then open on your navigator "https://31.220.09.177:8878" and you will be taken to the https website that you are tunneling.
+
+#### Diagram of Connection
+Exposed IP(31.220.09.177:8878):<br>
+       <tab><-------><<31.220.09.177:8878>>
+                                     <----------><23.87.270.189:5001>
+                                                                <---->PortForward<---->
+                                                                                        <localIPwhereOF_the_https>
+                                                                                        (192.168.1.7:57)
+
+
+
+
+
+
+
+
+