adding in arel-helpers

this gem makes writing complex arel queries a ton easier.
updating the Version file
moving the require to metasploit_data_models.rb

adding the comment from bundler about add_runtime_dependency not requiring your dependencies
The future is now.

MSP-9842
Prerelease dropped post #72 merge

MSP-9842
Merge branch 'master' into feature/MSP-10032/mdm-tag-search

MSP-10032

Conflicts:
	lib/metasploit_data_models/version.rb