Use https in podspec.

Author: ayanonagon

VENTokenField.podspec

@@ -9,7 +9,7 @@ Pod::Spec.new do |s|
   s.screenshot   = 'http://i.imgur.com/a1FfEBi.gif'
   s.license      = { :type => 'MIT', :file => 'LICENSE' }
   s.author       = { 'Venmo' => 'ios@venmo.com'}
-  s.source       = { :git => 'http://github.com/venmo/VENTokenField.git', :tag => "v#{s.version}" }
+  s.source       = { :git => 'https://github.com/venmo/VENTokenField.git', :tag => "v#{s.version}" }
   s.source_files = 'VENTokenField/**/*.{h,m}'
   s.resources   = ["VENTokenField/**/*.{xib,png}"]
   s.dependency 'FrameAccessor', '~> 1.0'