Add contribution and build instructions for collaboration efforts

[BatteryAcid]

In order to help out with the progression of this project, consider allowing other collaborators to push updates. Please document the process for building the plugin for development.

[scriptsengineer]

Perfect, I'll start riding this Saturday

[dev-bre]

is there any upate on this matter? it is still quite difficult to build theproject locally or to understand which package to copy over between the different branches. For instance, the bin folder in the main branch is empty.