Update README for SPM

Author: kylef

README.md

@@ -151,35 +151,13 @@ Hello Kyle
 
 ## Installation
 
-You can install Commander in many ways, such as with Conche or CocoaPods.
-
-### Conche (recommended)
-
-The recommended way to use Commander would be via [Conche](https://github.com/Conche/Conche).
-
-### CocoaPods
-
-```ruby
-use_frameworks!
-pod 'Commander'
-```
-
-#### Rome
-
-[Rome](https://github.com/neonichu/Rome) is a plugin for CocoaPods to build
-the `.framework`s for your dependencies. When you run `pod install` using
-the Rome plugin, dependencies will be build into the `Rome` directory.
-
-```ruby
-platform :osx, '10.10'
-plugin 'cocoapods-rome'
-pod 'Commander'
-```
+You can install Commander in many ways, with SPM (Swift Package Manager), [Conche](https://github.com/Conche/Conche), CocoaPods or [CocoaPods-Rome](https://github.com/neonichu/Rome).
 
 ### Frameworks and `rpath`
 
-It's important to note that the `.framework` file for Commander (and any
-other dependency) must be available at run-time for your command line tool.
+It's important to note that the `.framework` or dynamic library file for
+Commander (and any other dependency) must be available at run-time for your
+command line tool. Unless you are using SPM.
 
 Applications will look in their `rpath` which contains paths of where it expects
 the `.framework`s to be found at.