Bumping version

Author: ankurp

.swift-sample

@@ -3,6 +3,6 @@
   "title": "Dollar",
   "description": "Learn to use Dollar",
   "swiftversion": "swift-3.0-RELEASE-ubuntu14.04",
-  "giturl": "https://github.com/ankurp/DollarSwiftPackage",
+  "giturl": "https://github.com/ankurp/DollarSwiftPackageSample",
   "gittag": "1.0.0"
 }

Dollar.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "Dollar"
-  s.version      = "6.2.0"
+  s.version      = "6.2.1"
   s.summary      = "A functional tool-belt for Swift Language"
   s.homepage     = "https://github.com/ankurp/Dollar"
   s.license      = { :type => "MIT", :file => "LICENSE" }

README.md

@@ -23,7 +23,7 @@ Dollar is a Swift library that provides useful functional programming helper met
 
 ## Using [Carthage](https://github.com/Carthage/Carthage)
 
-Add `github "ankurp/Dollar" ~> 6.1.0` to your `Cartfile` and run `carthage update`. If unfamiliar with Carthage then checkout their [Getting Started section](https://github.com/Carthage/Carthage#getting-started) or this [sample app](https://github.com/ankurp/DollarCarthageApp)
+Add `github "ankurp/Dollar" ~> 6.2.1` to your `Cartfile` and run `carthage update`. If unfamiliar with Carthage then checkout their [Getting Started section](https://github.com/Carthage/Carthage#getting-started) or this [sample app](https://github.com/ankurp/DollarCarthageApp)
 
 ## Using [cocoapods](http://cocoapods.org/) version 0.36.x or greater
 
@@ -46,7 +46,8 @@ Still stuck. Then checkout this screencast on [how to import](http://recordit.co
 
 ## Support for Xcode and Swift
 
-* For Xcode 8 (Swift 3) user version `6.1.0`
+* For Xcode 9 (Swift 4) use branch [`xcode-9-swift-4`](https://github.com/ankurp/Dollar/pull/255)
+* For Xcode 8 (Swift 3) use version `6.2.1`
 * For Xcode 7 (Swift 2) use version `4.1.0` or `5.2.0`
 * For Xcode 6.3 (Swift 1.2) use version `3.0.3`
 * For Xcode 6.1 and 6.2 (Swift 1.1) use version `2.2.0`