Update README.md

add simple instructions for rmpro

README.md

@@ -3,6 +3,29 @@ Single-minded HTTPS reverse proxy
 
 (forked from https://github.com/yi-jiayu/secure)
 
+## Installation
+
+
+
+### Manual
+Download `installer-rm12.sh` for rm1/2 or `installer-rmpro.sh` on a pc.  
+Transnfer to the tablet with `scp` / `WinSCP`  
+run installer on the tablet over ssh  
+```
+chmod +x installer-xxx.sh
+./installer-xxx.sh
+```
+
+### Use toltec if supported
+`opkg install rmfakecloud-proxy`
+
+### rmpro
+To make it permanent, make root writable and unmount /etc first e.g.
+```
+mount -o remount,rw /
+umount -R /etc
+./installer-rmpro.sh
+```
 
 ## Usage
 ```
@@ -30,3 +53,4 @@ key: proxy.key
 upstream: https://somehost:123
 #addr: :443
 ```
+