Added podspec

BrightFutures.podspec

@@ -0,0 +1,17 @@
+Pod::Spec.new do |s|
+  s.name = 'BrightFutures'
+  s.version = '1.0.0-beta.2'
+  s.license = 'MIT'
+  s.summary = 'A simple Futures & Promises library for iOS and OS X written in Swift'
+  s.homepage = 'https://github.com/Thomvis/BrightFutures'
+  s.social_media_url = 'https://twitter.com/thomvis88'
+  s.authors = { 'Thomas Visser' => '[email protected]' }
+  s.source = { :git => 'https://github.com/Thomvis/BrightFutures.git', :tag => s.version }
+
+  s.ios.deployment_target = '8.0'
+  s.osx.deployment_target = '10.10'
+
+  s.source_files = 'BrightFutures/*.swift'
+
+  s.requires_arc = true
+end