[WIP] RaiBlocksJS rewrite (This is a big one 😬)

[orrybaram]

Motivation

With the growing potential of RaiBlocks, having an accessible API layer to interface with the protocol can let existing javascript developers create their own projects and expand the RaiBlocks landscape. Having a solid foundation for that is crucial. This PR looks to be that first step in creating a solid, well tested base for future development.

Features

• Isomorphic design, can be run in the browser or in a node environment
• Contains convenience methods for all RPC actions as well as an api for creating raw requests
• Uses latest Javascript standards
• Fully linted using airbnb's base linting rules
• All methods and utils covered by tests
• Adds continuous integration for builds
• Adds the raiblocks-js npm package

Notes

Most of the methods were tested using a local node, but there's definitely potential for some them to be faulty

Todo

• [ ] Add Extended functionality
• [x] Increase code coverage
• [ ] Add better documentation

[rebrec]

wow this is a big pull request, hope it will be merged soon :)

[orrybaram]

Im changing this back to a WIP since I realized today that all of the 'expanded' functionality is missing. I hope to have this updated soon!

[rebrec]

i hope too :)