Fixes missing arm64 compatibility

I've just missed arm64 compatibility. Works now fine with Xcode 7.2.1

Author: fuxx

podstuff/module.modulemap

@@ -8,15 +8,20 @@ framework module SQLite {
     //     header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/sqlite3.h"
     module arm {
         header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/sqlite3.h"
-        link "sqlite3"
         requires arm
     }
 
+    module arm64 {
+        header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/sqlite3.h"
+        requires arm64
+    }
+    
     module x86 {
         header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/include/sqlite3.h"
-        link "sqlite3"
         requires x86
     }
+    
+    link "sqlite3"
 
     export *
     module * { export * }