Update sketchup-pro to 2017 (#3225)

Casks/sketchup-pro.rb

@@ -1,6 +1,6 @@
 cask 'sketchup-pro' do
-  version :latest
+  version '2017'
-  sha256 :no_check
+  sha256 'dd7f8e631bce4e9ddd6f1febd1324f6601025b47c742f1f05893f703893b3289'
 
   # downloads can be found at http://www.sketchup.com/download/all
   # trimble.com/sketchup was verified as official when first introduced to the cask
@@ -8,10 +8,10 @@ cask 'sketchup-pro' do
   name 'SketchUp'
   homepage 'http://www.sketchup.com/'
 
-  suite 'SketchUp 2016'
+  suite "SketchUp #{version}"
 
   zap delete: [
-                '~/Library/Application Support/SketchUp 2016',
+                "~/Library/Application Support/SketchUp #{version}",
-                '~/Library/Caches/com.sketchup.SketchUp.2016',
+                "~/Library/Caches/com.sketchup.SketchUp.#{version}",
               ]
 end