chore: update release process to cocoapods and bump podspec (#123)

Author: kwasniew

README.md

@@ -395,13 +395,13 @@ Bump the version number of the package, you can find this in `UnleashProxyClient
 Linting the podspec is always a good idea:
 
 ```sh
-pod spec lint UnleashProxyClientSwift.podspec
+pod spec lint UnleashProxyClientSwift.podspec --use-libraries
 ```
 
 Once that succeeds, you can do the actual release:
 
 ```sh
-pod trunk push UnleashProxyClientSwift.podspec --allow-warnings
+pod trunk push UnleashProxyClientSwift.podspec --allow-warnings --use-libraries
 ```
 
 ## Testing

UnleashProxyClientSwift.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
 spec.name         = "UnleashProxyClientSwift"
-spec.version      = "2.0.0"
+spec.version      = "2.2.0"
 spec.summary      = "Allows frontend clients to talk to unleash through the unleash edge, frontend API or the (deprecated) unleash proxy"
 spec.homepage     = "https://www.getunleash.io"
 spec.license      = { :type => "MIT", :file => "LICENSE" }