Update README.md

ported to 4.15

fixed autodetection for PyFbxFactory 20tab#488

Merge pull request 20tab#504 from heylenz/master

pyactor add  function "set_actor_hidden_in_game"

added set_brutal_finalize()

fixed 4.18

Update MemoryManagement.md

include 4.20 in automatic builds

python2.7/python3.5 fixes

prepare automated builds for python 3.7