add HTTP OPTIONS method to HTTP::Client

spec/std/http/client/client_spec.cr

@@ -30,7 +30,7 @@ module HTTP
     typeof(Client.new(URI.new))
     typeof(Client.new(URI.parse("http://www.example.com")))
 
-    {% for method in %w(get post put head delete patch) %}
+    {% for method in %w(get post put head delete patch options) %}
       typeof(Client.{{method.id}} "url")
       typeof(Client.new("host").{{method.id}}("uri"))
       typeof(Client.new("host").{{method.id}}("uri", headers: Headers {"Content-Type" => "text/plain"}))

src/http/client.cr

@@ -326,7 +326,7 @@ class HTTP::Client
     before_request << callback
   end
 
-  {% for method in %w(get post put head delete patch) %}
+  {% for method in %w(get post put head delete patch options) %}
     # Executes a {{method.id.upcase}} request.
     # The response will have its body as a `String`, accessed via `HTTP::Client::Response#body`.
     #