Alpha Testnet with Sidechaining

This is an updated testnet client connecting to a bootstrap node that includes our new smart contract system and sidechaining with the Ethereum Rinkeby testnet. It contains:

Default settings linking the client to AWS testnet bootstrap nodes
A JAR file ready to run via command-line on any platform running JRE 8
Scripts for running the client without requiring command-line interaction
Two options, for connecting to the public bootstrap node, or creating a private local testnet.
To run via the command-line, simply use

java -jar project-bifrost-0.2.1-alpha-public.jar
or
java -jar project-bifrost-0.2.1-alpha-private.jar

in the same directory as the JAR. Otherwise, use the respective .sh (Unix) or .bat (Windows) files provided.