README update with comparisons

README.md

@@ -1,20 +1,52 @@
+```
+   ___       __________ __
+  / _ \___  / __/ __/ // /
+ / , _/ _ \_\ \_\ \/ _  /
+/_/|_|\___/___/___/_//_/
+```
+
 # RoSSH
 Robust SSH: Long live, auto reconnect ssh session that just works. No manual server installation or root privilege required. Support servers behind NAT and reverse proxies.
 
-## Usage
-Just replace `ssh` with `rossh`.
-``` shell
-rossh <hostname>
-```
+## Why another one?
+RoSSH is more robust than most of the outstanding SSH clients. 
+
+Perhaps the most useful feature of RoSSH is its ability to bypass NAT and firewalls without manually installing any software on the remote server.
+Even with this simplicity, RoSSH supports some complex features like public key agent forwarding.
+
+Below is a detailed feature comparison with some similar projects.
+
+|Feature|[Mosh](https://github.com/mobile-shell/mosh)|[AutoSSH](https://github.com/samueleaton/autossh)|[EternalTerminal](https://github.com/MisterTea/EternalTerminal)|RoSSH|
+| ----- | ----- | ----- | ----- | ----- |
+|**No need to install remotely**|Yes|Yes|No|Yes|
+|Normal user (no root required)|Yes|Yes|No|Yes|
+|Long live shell|Yes|No|Yes|Yes|
+|**Support servers behind NAT, firewalls, etc**|No|Yes|No|Yes|
+|Support native scroll|No|Yes|Yes|Yes|
+|**Port forwarding**|No|Yes|Yes|Yes|
+|**Stable Agent forwarding**|No|No|Yes|Yes|
+|Better experience with long delay server echo|Yes|No|No|No|
 
-## Install
-RoSSH supports Linux and MacOS. Windows users can install it in WSL. Please run the following in your terminal, then follow the on-screen instructions.
+
+## Installation
 ``` shell
 bash <(curl -s https://raw.githubusercontent.com/gzz2000/RoSSH/master/install.sh)
 ```
 
+RoSSH supports Linux and MacOS. Windows users can install it in WSL. Please run the above one-liner in your terminal, and then follow the on-screen instructions.
+
 This would download `rossh_server.py`, `rossh_client.py`, `rossh_common.py` and put them under `~/.rossh`.
 
-RoSSH is implemented using python. So both your host and your remote server should have a python 3.4+ interpreter (which most UNIX distros already do).
+RoSSH is written in Python. As a result, both your host and your remote server should have a Python 3.4+ interpreter -- which most UNIX distros already do.
+
+
+## Usage
+Just replace your familiar `ssh` commands with `rossh` instead.
+
+``` shell
+rossh <user>@<hostname>
+```
 
+You can add `-L xxxx:xxxx`, `-A`, `-X`, and other SSH client options along with the command line, or just store them in your `~/.ssh/config` and RoSSH will obey them. 
 
+Note that you can't directly specify a command to execute at remote server, because RoSSH always opens a shell for you instead.