Switch to gemini-1.5-pro-latest in docs and tests (#138)

Author: andrewheard

README.md

@@ -16,7 +16,7 @@ For example, with just a few lines of code, you can access Gemini's multimodal c
 generate text from text-and-image input:
 
 ```swift
-let model = GenerativeModel(name: "gemini-1.0-pro-vision-latest", apiKey: "YOUR_API_KEY")
+let model = GenerativeModel(name: "gemini-1.5-pro-latest", apiKey: "YOUR_API_KEY")
 let cookieImage = UIImage(...)
 let prompt = "Do these look store-bought or homemade?"
 

Sources/GoogleAI/GenerativeModel.swift

@@ -48,7 +48,7 @@ public final class GenerativeModel {
   /// Initializes a new remote model with the given parameters.
   ///
   /// - Parameters:
-  ///   - name: The name of the model to use, e.g., `"gemini-1.0-pro"`; see
+  ///   - name: The name of the model to use, e.g., `"gemini-1.5-pro-latest"`; see
   ///     [Gemini models](https://ai.google.dev/models/gemini) for a list of supported model names.
   ///   - apiKey: The API key for your project.
   ///   - generationConfig: The content generation parameters your model should use.

Tests/GoogleAITests/GoogleAITests.swift

@@ -33,17 +33,25 @@ final class GoogleGenerativeAITests: XCTestCase {
     let systemInstruction = ModelContent(role: "system", parts: [.text("Talk like a pirate.")])
 
     // Permutations without optional arguments.
-    let _ = GenerativeModel(name: "gemini-1.0-pro", apiKey: "API_KEY")
-    let _ = GenerativeModel(name: "gemini-1.0-pro", apiKey: "API_KEY", safetySettings: filters)
-    let _ = GenerativeModel(name: "gemini-1.0-pro", apiKey: "API_KEY", generationConfig: config)
+    let _ = GenerativeModel(name: "gemini-1.5-pro-latest", apiKey: "API_KEY")
     let _ = GenerativeModel(
-      name: "gemini-1.0-pro",
+      name: "gemini-1.5-pro-latest",
+      apiKey: "API_KEY",
+      safetySettings: filters
+    )
+    let _ = GenerativeModel(
+      name: "gemini-1.5-pro-latest",
+      apiKey: "API_KEY",
+      generationConfig: config
+    )
+    let _ = GenerativeModel(
+      name: "gemini-1.5-pro-latest",
       apiKey: "API_KEY",
       systemInstruction: systemInstruction
     )
 
     // All arguments passed.
-    let genAI = GenerativeModel(name: "gemini-1.0-pro",
+    let genAI = GenerativeModel(name: "gemini-1.5-pro-latest",
                                 apiKey: "API_KEY",
                                 generationConfig: config, // Optional
                                 safetySettings: filters, // Optional