added uuid secret generator method + example

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
monkey-patched securerandom to support uuid generation in case ruby 1.8 is used

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
added uuid secret generator to readme

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge branch 'feature/uuid-secret' into nightly
version bump to 0.8

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge branch 'release/0.8'
Merge tag '0.8' into nightly

0.8