Update README.md

Author: coderastic

README.md

@@ -1,3 +1,17 @@
 # OwnVPN
 
 Simple script to deploy your own VPN server.
+
+
+# PPTP
+Only MS-CHAP v2 with MPPE-128 encryption is allowed.
+
+# Note that PPTP is NOT recommended for transmission secret data, because all strong PPTP authentication algorithms have been already hacked.
+
+# INSTALLATION
+
+Download: "git clone https://github.com/coderastic/ownvpn.git"
+
+then run "sudo ./ownvpn/PPTP/install.sh"
+
+More VPN protocols will be added soon.