Enhance README

Author: andreibondarev

README.md

@@ -98,7 +98,10 @@ client.chat(
 
 ```ruby
 client.embed(
-  texts: ["hello!"]
+  model: "embed-english-v3.0",
+  texts: ["hello", "goodbye"],
+  input_type: "classification",
+  embedding_types: ["float"]
 )
 ```
 
@@ -114,6 +117,7 @@ docs = [
 ]
 
 client.rerank(
+  model: "rerank-english-v3.0",
   query: "What is the capital of the United States?",
   documents: docs
 )
@@ -141,24 +145,27 @@ inputs = [
 ]
 
 client.classify(
-  examples: examples,
-  inputs: inputs
+  model: "embed-multilingual-v2.0",
+  inputs: inputs,
+  examples: examples
 )
 ```
 
 ### Tokenize
 
 ```ruby
 client.tokenize(
-  text: "hello world!"
+  model: "command-r-plus-08-2024",
+  text: "Hello, world!"
 )
 ```
 
 ### Detokenize
 
 ```ruby
 client.detokenize(
-  tokens: [33555, 1114 , 34]
+  model: "command-r-plus-08-2024",
+  tokens: [33555, 1114, 34]
 )
 ```
 

lib/cohere/client.rb

@@ -78,7 +78,7 @@ def generate(
       logit_bias: nil,
       truncate: nil
     )
-      response = connection.post("generate") do |req|
+      response = v1_connection.post("generate") do |req|
         req.body = {prompt: prompt}
         req.body[:model] = model if model
         req.body[:num_generations] = num_generations if num_generations

spec/cohere/client_spec.rb

@@ -5,6 +5,23 @@
 RSpec.describe Cohere::Client do
   subject { described_class.new(api_key: "123") }
 
+  describe "#generate" do
+    let(:generate_result) { JSON.parse(File.read("spec/fixtures/generate.json")) }
+    let(:response) { OpenStruct.new(body: generate_result) }
+
+    before do
+      allow_any_instance_of(Faraday::Connection).to receive(:post)
+        .with("generate")
+        .and_return(response)
+    end
+
+    it "returns a response" do
+      expect(subject.generate(
+        prompt: "Once upon a time in a magical land called"
+      ).dig("generations").first.dig("text")).to eq(" The Past there was a Game called Warhammer Fantasy Battle.")
+    end
+  end
+
   describe "#chat" do
     let(:generate_result) { JSON.parse(File.read("spec/fixtures/chat.json")) }
     let(:response) { OpenStruct.new(body: generate_result) }

spec/fixtures/generate.json

@@ -0,0 +1,15 @@
+{
+  "id": "a6bdaf27-5050-4ec1-862e-cdc171245692",
+  "generations": [
+    {
+      "id": "2dcf03a3-e375-4aa5-b442-ab95bdc5f989",
+      "text": " The Past there was a Game called Warhammer Fantasy Battle."
+    }
+  ],
+  "prompt": "Once upon a time in a magical land called",
+  "meta": {
+    "api_version": {
+      "version": "1"
+    }
+  }
+}