Removes almost everything from the README, and links to docs.
Removes almost everything from the README, and links to docs.

arokem/AFQ-Browser,arokem/AFQ-Browser,richford/AFQ-Browser,arokem/AFQ-Browser,yeatmanlab/AFQ-Browser,yeatmanlab/AFQ-viz,yeatmanlab/AFQ-viz,yeatmanlab/AFQ-Browser,richford/AFQ-Browser,richford/AFQ-viz,richford/AFQ-Browser,yeatmanlab/AFQ-Browser,richford/AFQ-viz