update README

Author: leo-altertable

README.md

@@ -101,43 +101,6 @@ pkeys = client.get_primary_keys("users", catalog="my_db", schema="public")
 - 📊 Easy result handling (Arrow, Pandas integration)
 - 🔧 Prepared statements and batch operations
 
-## API Reference
-
-### Client
-
-Main client class for interacting with Altertable.
-
-**Connection:**
-
-- `__init__(username, password, catalog="altertable", schema="main", host="flight.altertable.ai", port=443, tls=True)`
-- `close()`
-
-**Queries:**
-
-- `execute(query, transaction_id=None)` - Execute SELECT query
-- `execute_update(query, transaction_id=None)` - Execute INSERT/UPDATE/DELETE
-- `prepare(query, transaction_id=None)` - Create prepared statement
-
-**Metadata:**
-
-- `get_catalogs()` - List catalogs
-- `get_schemas(catalog=None, schema_pattern=None)` - List schemas (uses client catalog by default)
-- `get_tables(catalog=None, schema_pattern=None, table_pattern=None, ...)` - List tables (uses client catalog/schema by default)
-- `get_primary_keys(table, catalog=None, schema=None)` - Get primary keys (uses client catalog/schema by default)
-
-**Transactions:**
-
-- `begin_transaction()` - Start transaction, returns transaction_id
-- `commit_transaction(transaction_id)` - Commit transaction
-- `rollback_transaction(transaction_id)` - Rollback transaction
-
-### PreparedStatement
-
-Represents a prepared SQL statement.
-
-- `execute(parameters=None)` - Execute with optional parameters
-- `close()` - Release server resources
-
 ## Development
 
 ### Setup
@@ -198,7 +161,7 @@ This package includes comprehensive integration tests that validate functionalit
 pip install -e ".[dev]"
 
 # Run all tests
-# Having the altertable-ai/altertable-mock docker image locally will speed things up.
+# Having the ghcr.io/altertable-ai/altertable-mock docker image locally will speed things up.
 pytest tests/
 ```