Merge branch 'master' into fun-types

README.md

@@ -86,13 +86,13 @@ and can be used to alter the referenced value. If you only need to manipulate JS
 check out my [JSON Pointer implementation].
 
 ## User-defined functions
-The JSONPath parser may be extended by user-defined functions. The user-defined functions
+The JSONPath parser may be extended with user-defined functions. The user-defined functions
 take precedence over the built-in ones specified by the standard. Currently, only
 functions of 1 and 2 arguments are supported. 
 
 To create your own function:
 1. Import `package:json_path/fun_sdk.dart`.
-2. Create a class implementing either `Fun1` (1 argument) or `Fun2` (2 argument).
+2. Create a class implementing either `Fun1` (1 argument) or `Fun2` (2 arguments).
 
 To use it:
 1. Create a new JsonPathParser with your function: `final parser = JsonPathParser(functions: [MyFunction()]);`