Add README

README.txt

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+==Preparing to run Juby==
+
+You will need MLVM/Da Vinci machine with current patches.
+
+Compile the bootstrap class:
+
+  javac src/com/headius/juby/SimpleJavaBootstrap.java
+
+==Compiling Juby source==
+
+jruby -J-cp src -J-XX:+EnableInvokeDynamic bin/jubyc <src.jb>
+
+or
+
+jruby -J-cp src -J-XX:+EnableInvokeDynamic bin/jubyc -e "juby script here"
+
+The latter will produce a "dash_e.class"
+
+==Running the compiled result==
+
+java -Xint -XX:+EnableInvokeDynamic -cp src:. <classname>
+
+==Notes==
+
+-Xint is only necessary until MLVM/DVM has JIT support for invokedynamic