caryoscelus/rainynite-core: 2D vector animation core @ node_tree

caryoscelus dccbb68b52 Remove RapidJson		7 rokov pred
..
catch	78edf1247b Properly fix Catch update script	7 rokov pred
yaml-cpp @ 1e242035b2	d406937dd6 Update yaml patches to fix fresh build	7 rokov pred
README.md	dccbb68b52 Remove RapidJson	7 rokov pred

Third-party dependencies.

Catch testing framework (not submodule-friendly, so put directly) http://catch-lib.net/
yaml-cpp (don't forget to initialize submodule) https://github.com/jbeder/yaml-cpp