Squashed 'data-fusion-server/' changes from 071454d..e4ddd30

e4ddd30 tweaks to client cache logic
e2f75c1 more README
74265ef a slightly more helpful README
67180d6 Create LICENSE

git-subtree-dir: data-fusion-server
git-subtree-split: e4ddd30315ef308a396a4de95fdc29bc0be551ec
Merge commit 'c2626dee583e6bebfa5586cf07cfe9c6a470bcbb'