Update readme and remove db check

Author: rescrv

README.md

@@ -26,8 +26,8 @@ The library reference can be found [here](https://docs.rs/chromadb).
 #### You can connect to ChromaDB by instantiating a [ChromaClient](https://docs.rs/chromadb/latest/chromadb/v1/client/struct.ChromaClient.html)
 
  ```rust
-use chromadb::v2::client::{ChromaAuthMethod, ChromaClient, ChromaClientOptions, ChromaTokenHeader};
-use chromadb::v2::collection::{ChromaCollection, GetQuery, GetResult, CollectionEntries};
+use chromadb::client::{ChromaAuthMethod, ChromaClient, ChromaClientOptions, ChromaTokenHeader};
+use chromadb::collection::{ChromaCollection, GetQuery, GetResult, CollectionEntries};
 
 // With default ChromaClientOptions
 // Defaults to http://localhost:8000
@@ -39,8 +39,8 @@ let auth = ChromaAuthMethod::TokenAuth {
     header: ChromaTokenHeader::Authorization
 };
 let client: ChromaClient = ChromaClient::new(ChromaClientOptions {
-    url: "<CHROMADB_URL>".into(),
-    database: Some("<DATABASE>".into()),
+    url: Some("<CHROMADB_URL>".into()),
+    database: "<DATABASE>".into(),
     auth
 });
 ```

src/api.rs

@@ -45,6 +45,7 @@ pub(super) struct APIClientAsync {
 #[derive(serde::Deserialize)]
 pub(crate) struct UserIdentity {
     pub tenant: String,
+    #[allow(dead_code)]
     pub databases: Vec<String>,
 }
 

src/client.rs

@@ -55,14 +55,6 @@ impl ChromaClient {
                 .unwrap_or(std::env::var("CHROMA_URL").unwrap_or(DEFAULT_ENDPOINT.to_string()))
         };
         let user_identity = APIClientAsync::get_auth(&endpoint, &auth).await?;
-        if user_identity.databases.iter().all(|db| db != &database)
-            && !matches!(auth, ChromaAuthMethod::None)
-        {
-            return Err(anyhow::anyhow!(
-                "Database {} not found in user's databases",
-                database
-            ));
-        }
         Ok(ChromaClient {
             api: Arc::new(APIClientAsync::new(
                 endpoint,