Creating Strongback gradle project structure

[jmcshane]

Resolves #92

NB: The ant structure will be maintained and this is still in progress

Please feel free to comment on the PR and address issues as I continue to work on this. I'm hoping to be able to help the teams that have an existing maven/gradle structure in their projects to be able to plugin strongback and strongback-testing right into their code.

Description

This conversion will allow the ant structure to be maintained and all existing ant tools to be preserved while allowing others to reference this gradle project and get the transitive dependencies that come with the project.

PR Status

Complete

• Refactoring to a directory structure that will fit more easily into a gradle build
• write build.gradle file for the base project
• regression test all documented ant functionality after refactor

To Do

• instructions for downloading third party dependencies for compilation when referencing strongback in a gradle/maven project (ctre, nvax, wpilib) in progress
• define publishing strategy for strongback.jar and strongback-testing.jar will leave this to repository owners
• provide example project using the gradle structure in progress

[jmcshane]

I'm working on resolving this failure now, check out the gradle-download-externals branch in my fork of this repository. I have wpilib resolving, now I just need to add the other ones. The code is rough for now, but I'm going to create a gradle plugin for downloading the latest version of each from the vendor.

[jmcshane]

Thanks for the review. I'll try to get these changes pushed out this evening

[jmcshane]

All comments above have been resolved by 4af573a.