bump to 0.5.10.2

# 0.5.10.2

Update to Rails 4.2.7.1 which fixes [CVE-2016-6316](https://groups.google.com/forum/#!topic/ruby-security-ann/8B2iV2tPRSE) and [CVE-2016-6317](https://groups.google.com/forum/#!topic/ruby-security-ann/WccgKSKiPZA).

# 0.5.10.1

We made a mistake and removed `mysql2` from the `Gemfile.lock` in a recent gem update. Since this could cause some issues for some installations, we decided to release a hotfix.

defaults:

  version:

    number: "0.5.10.1" # Do not touch unless doing a release, do not backport the version number that's in master

    number: "0.5.10.2" # Do not touch unless doing a release, do not backport the version number that's in master

  heroku: false

  environment:

    url: "http://localhost:3000/"