upgrade Dollar to version 9.0.0

Author: walker.zhai

Cent.podspec

@@ -12,5 +12,5 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = "10.10"
   s.tvos.deployment_target = "9.0"
   s.watchos.deployment_target = "2.0"
-  s.dependency "Dollar", "~> 7.1.0"
+  s.dependency "Dollar", "~> 9.0.0"
 end

Package.swift

@@ -1,7 +1,8 @@
+// swift-tools-version:4.0
 import PackageDescription
 
 let package = Package(
     name: "Cent",
     dependencies: [
-        .Package(url: "https://github.com/ankurp/Dollar", majorVersion: 7, minor: 1)
+        .Package(url: "https://github.com/ankurp/Dollar", majorVersion: 9, minor: 0)
     ])