Upped version number in podspec.

Author: Mike Amaral

Onboard.podspec

@@ -1,14 +1,14 @@
 Pod::Spec.new do |s|
 
   s.name         = "Onboard"
-  s.version      = "2.1.7"
+  s.version      = "2.1.8"
   s.summary      = "Create a beautiful and engaging onboarding experience with only a few lines of code."
   s.homepage     = "https://github.com/mamaral/Onboard"
   s.license      = "MIT"
   s.author       = { "Mike Amaral" => "[email protected]" }
   s.social_media_url   = "http://twitter.com/MikeAmaral"
   s.platform     = :ios
-  s.source       = { :git => "https://github.com/mamaral/Onboard.git", :tag => "v2.1.7" }
+  s.source       = { :git => "https://github.com/mamaral/Onboard.git", :tag => "v2.1.8" }
   s.source_files  = "Source/OnboardingViewController.{h,m}", "Source/OnboardingContentViewController.{h,m}"
   s.requires_arc = true