adds README

README.md

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+# OpenMPI
+
+A distributed Java implementation of the VISA 3-D Secure(tm) Merchant 
+Server Plug-in (MPI) that allows e-commerce web site to perform payment 
+authentication operations for Internet purchases.
+
+## Build
+
+Download source code from Github and compile
+
+    $ git clone git@github.com:x2q/openmpi.git
+
+    $ ant
+
+## Installation
+
+## Todo
+
+* Make it compile with tomcat 7 and Java 7