Update ruby_parser to the lastest version (3.1.1)

This fixes a conflict with the 'tomdoc' gem.
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
Merge remote-tracking branch 'neersighted/patch-1'

Update to RubyParser 3.1.1
Allow searching by Sexp in Brakeman::FindCall

but seriously we need to kill this
Add tests for CVE-2013-0156
Add check for CVE-2013-0156
Forgot to adjust expected warnings
Add version check for CVE-2013-0155
Add tests for YAML.load
Add check for YAML.load
Merge pull request #239 from presidentbeef/add_even_more_CVEs

Add checks for CVE-2013-0155 and CVE-2013-0156