Added Readme file.

README.md

+# ISPConfig - Hosting Control Panel
+
+- Manage multiple servers from one control panel
+- Web server management (Apache2 and nginx)
+- Mail server management (with virtual mail users)
+- DNS server management (BIND and MyDNS)
+- Virtualization (OpenVZ)
+- Administrator, reseller and client login
+- Configuration mirroring and clusters
+- Open Source software (BSD license)
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