Add README.

README

+VNC Web Client implemented using HTML5 (Web Sockets, Canvas)
+
+In order to use the client you need to use the python proxy. There are
+a couple reasons for this:
+
+- Web Sockets is not a pure socket protocol. There is an initial HTTP
+  like handshake to allow easy hand-off by web servers and allow some
+  origin policy exchange. Also, each Web Sockets frame begins with
+  0 ('\x00') and ends with 255 ('\xff').
+
+- Javascript itself does not have the ability to handle pure byte
+  strings (Unicode encoding messes with it) even though you can read
+  them with Web Sockets. The python proxy base64 encodes the data so
+  that the Javascript client can base64 decode the data into an array.
+
+The python proxy is run like this:
+
+    ./wsproxy.py <listen_port> <remote_host> <remote_port>
+
+You then point the client at the listen_port on the host where the
+wsproxy.py command is running.