docs: update documentation

README.md

@@ -16,11 +16,13 @@ pip install hubmigrate
 
 1. Import the `MigrationClient` class from the `hubmigrate.client` module.
 2. Create an instance of the `MigrationClient` class with the name of the config file and the name of the HubSpot portal.
-3. Import the JSON data file to migrate.
+3. Import the data file (JSON, Excel, or CSV) to migrate.
 4. Call the `migrate_<object>` method on the `MigrationClient` instance with the object to migrate.
 
 ### Usage Example
 
+#### JSON Data
+
 ```python
 from hubmigrate.client import MigrationClient
 import json
@@ -34,7 +36,43 @@ def post_company():
         company = json.load(f)
 
     # Migrate the company to HubSpot
-    response = client.migrate_company({'properties': company})
+    response = client.migrate_company({'properties': company}, data_type='json')
+
+post_company()
+```
+
+#### Excel Data
+
+```
+from hubmigrate.client import MigrationClient
+
+# Create an instance of the MigrationClient class
+client = MigrationClient('config', 'hubspot')
+
+def post_company():
+    # Path to the Excel file
+    excel_file_path = 'hubmigrate/classes/sample_company.xlsx'
+    
+    # Migrate the company to HubSpot
+    response = client.migrate_company(excel_file_path, data_type='excel')
+    
+post_company()
+```
+
+#### CSV Data
+
+```
+from hubmigrate.client import MigrationClient
+
+# Create an instance of the MigrationClient class
+client = MigrationClient('config', 'hubspot')
+
+def post_company():
+    # Path to the CSV file
+    csv_file_path = 'hubmigrate/classes/sample_company.csv'
+    
+    # Migrate the company to HubSpot
+    response = client.migrate_company(csv_file_path, data_type='csv')
     
 post_company()
 ```
@@ -49,7 +87,7 @@ post_company()
 
 ### 🏭 Migrate Companies
 
-- `migrate_company(data)`: Migrate a company to HubSpot.
+- `migrate_company(data, data_type='json')`: Migrate a company to HubSpot.
 - `update_company(data, company_id)`: Update a company in HubSpot.
 - `delete_company(company_id)`: Delete a company in HubSpot.