Removed the .swift-version file and added it directly to the podspec.

Author: cnoon

.swift-version

@@ -8,6 +8,7 @@ Pod::Spec.new do |s|
 
   s.source = { :git => 'https://github.com/Nike-Inc/Elevate.git', :tag => s.version }
   s.source_files = 'Source/*.swift'
+  s.swift_version = '4.0'
 
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.11'