Upgrade cocoapods to 0.36.1 and allow pod lint warnings
Upgrade cocoapods to 0.36.1 and allow pod lint warnings

In order to push to trunk, we need to allow warnings. We can get rid of
the `--allow-warnings` flag once we take 3D Secure out of beta.

(cherry picked from commit bb501c1c4d1f040cc68a978ce80ca223ae102577)

Resolved Conflicts:
	Gemfile.lock
	Podfile.lock

Feverup/braintree_ios,Feverup/braintree_ios,braintree/braintree_ios,bytemarkinc/braintree_ios,billCTG/braintree_ios,braintree/braintree_ios,EverettQuebral/braintree_ios,TeachersPayTeachers/braintree_ios,bytemarkinc/braintree_ios,braintree/braintree_ios,Feverup/braintree_ios,bytemarkinc/braintree_ios,braintree/braintree_ios,billCTG/braintree_ios,apascual/braintree_ios,bytemarkinc/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,TeachersPayTeachers/braintree_ios,EverettQuebral/braintree_ios,TeachersPayTeachers/braintree_ios,apascual/braintree_ios,EverettQuebral/braintree_ios,TeachersPayTeachers/braintree_ios,billCTG/braintree_ios,bytemarkinc/braintree_ios,EverettQuebral/braintree_ios,Feverup/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,TeachersPayTeachers/braintree_ios,EverettQuebral/braintree_ios