Update Podspec for 0.11.0

Author: stevelandeyasana

Drawsana.podspec

@@ -1,15 +1,15 @@
 Pod::Spec.new do |spec|
   spec.name         = 'Drawsana'
-  spec.version      = '0.10.0'
+  spec.version      = '0.11.0'
   spec.license      = { :type => 'MIT' }
   spec.homepage     = 'https://asana.github.io/Drawsana'
   spec.documentation_url = 'https://asana.github.io/Drawsana'
   spec.authors      = { 'Steve Landey' => 'stevelandey@asana.com' }
   spec.summary      = 'Let your users mark up images with freehand drawings, shapes, and text'
-  spec.source       = { :git => 'https://github.com/asana/Drawsana.git', :tag => '0.10.0' }
+  spec.source       = { :git => 'https://github.com/asana/Drawsana.git', :tag => '0.11.0' }
   spec.source_files = 'Drawsana/**/*.swift'
 
   spec.platform 	= :ios, '9.0'
 
-  spec.swift_version = '4.2'
+  spec.swift_version = '5.2'
 end