Merge tag '0.8' into nightly

0.8
added gem version info to readme

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
added an option to configure the memory of the vm

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
version bump to 0.9

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge branch 'release/0.9'