Fix basic_auth

src/kemal/macros.cr

@@ -23,7 +23,7 @@ end
 
 # Uses Kemal::Middleware::HTTPBasicAuth to easily add HTTP Basic Auth support.
 macro basic_auth(username, password)
-  auth_handler = Kemal::Middleware::HTTPBasicAuth.new("serdar", "123")
+  auth_handler = Kemal::Middleware::HTTPBasicAuth.new(username, password)
   Kemal.config.add_handler auth_handler
 end
 

src/kemal/param_parser.cr

@@ -37,6 +37,10 @@ class Kemal::ParamParser
     parse_part(@request.query)
   end
 
+  # Parses JSON request body if Content-Type is `application/json`.
+  # If request body is a JSON Hash then all the params are parsed and added into `params`.
+  # If request body is a JSON Array it's added into `params` as `_json` and can be accessed
+  # like params["_json"]
   def parse_json
     return unless @request.body && @request.headers["Content-Type"]? == APPLICATION_JSON