fixes cve-2013-1854, updates twitter gem so new installs work.
Merge pull request #754 from jrgifford/fixing-cve-2013-1854

fixes cve-2013-1854, updates twitter gem so new installs work.
Updates twitter gem and increases minor patches of all other gems.
Merge pull request #752 from wilkie/bugfix/update_twitter_gem

Updates twitter gem and increases minor patches of all other gems.