Update ruby_parser to the lastest version (3.1.1)

This fixes a conflict with the 'tomdoc' gem.
Add tests for secret_tokens
Add warning for secret_token

as suggested in #200
Merge pull request #227 from presidentbeef/check_for_secret_token

Check for secret_token
Tests for CVE-2012-5664
Add version check for CVE-2012-5664

Dynamic finders SQL injection vulnerability
a/an consistency
Merge pull request #228 from presidentbeef/CVE-2012-5664

Version check for CVE-2012-5664
Test more rubies
Merge pull request #231 from dwbutler/rubies

Test more rubies
Fixes #232 treat arrays as models -> polymorphic_url/path
Merge pull request #233 from oreoshake/poly_arrays_for_href

Fixes #232 treat arrays as models -> polymorphic_url/path
Removing Rubinius from Travis tests, too flaky
Add tests for more mass assignment methods
Add more mass assignment methods to check

fixes #223
Fix up mass assignment tests
Merge branch 'master' into more_mass_assignment_methods

Conflicts:
	test/tests/test_rails3.rb
presidentbeef/brakeman#210 Add hilarious pluralize method to remove activesupport
Remove active_support as well
Merge remote-tracking branch 'oreoshake/gh210_remove_active_support'

Remove active_support dependency, fixes #210