Update README.md

Author: petrpavlik

README.md

@@ -11,15 +11,23 @@ SDK documentation can be found [here](https://swiftpackageindex.com/indiepitcher
 
 The SDK is designed to work with any framework built on top of Swift Nio - Vapor, Hummingbird, or AWS Lamda is supported.
 
-Add the dependency to your `Package.swift` file
-```
+1) Add the dependency to your `Package.swift` file
+```swift
 .package(url: "https://github.com/IndiePitcher/indiepitcher-swift.git", from: "1.0.0"),
 ```
 
-Add IndiePitcher to appropriate target(s) of your project
-```
+2) Add IndiePitcher to appropriate target(s) of your project
+```swift
 .product(name: "IndiePitcherSwift", package: "indiepitcher-swift")
 ```
+
+You can also use the CLI instead
+```bash
+swift package add-dependency https://github.com/IndiePitcher/indiepitcher-swift.git --from 1.0.0
+swift package add-target-dependency IndiePitcherSwift --package indiepitcher-swift MyTarget
+```
+
+
 **Using the SDK:**
 - First, you need to get an API key. Go to the IndiePitcher dashboard, create a project, and generate a public API key.
 - Add the key to your `.env` file. Following examples will assume that you've added the key under `IP_SECRET_API_KEY` key.
@@ -73,7 +81,7 @@ struct MyLambda: SimpleLambdaHandler {
 
     func handle(_ event: String, context: LambdaContext) async throws -> String {
 
-        let indiePitcher = IndiePitcher(client: .shared, apiKey: indiePitcherApiKey)
+        let indiePitcher = IndiePitcher(apiKey: indiePitcherApiKey)
 
         let emailBody = """
             This is an email sent from a **AWS Lambda function**!