README.md in ezclient-0.6.1 vs README.md in ezclient-0.7.0

@@ -9,9 +9,34 @@
 ```ruby
 gem "ezclient"
 gem "http", github: "httprb/http"
 ```
 
+## Usage
+```ruby
+client = EzClient.new(client_options)
+client.perform!(:get, "https://example.com", params: { a: 1 })
+# Performs a GET request to https://example.com/?a=1
+```
+
+Valid client options are:
+- `api_auth` – arguments for `ApiAuth.sign!`
+- `keep_alive` – timeout for persitent connection
+- `max_retries` – max number of retries in case of errors
+- `on_complete` – callback called on request completion
+- `on_error` – callback called on request exception
+- `retry_exceptions` – exception classes to retry
+- `ssl_context` – ssl context for requests
+- `timeout` – timeout for requests
+
+Extra request options are:
+- `params` – becomes `query` for GET and `form` for other requests
+- `query` – hash for uri query
+- `form` – hash for urlencoded body
+- `body` – raw body
+- `json` – data for json
+- `headers` – headers for request
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/umbrellio/ezclient.
 
 ## License