Continue if the keyid is not in keydb while checking signatures
Merge pull request #234 from meskio/remove_signatures

Continue if the keyid is not in keydb while checking signatures
Merge pull request #235 from vladimir-v-diaz/develop

Revise repository tool README and fix assertTrue() issues in test_updater.py
Update README.md
Merge branch 'develop' of https://github.com/theupdateframework/tuf into develop
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Fix indentation in README.rst