some changes to make my reading easier

Mike J Hewitt · Mike J Hewitt · commit be1a9d85d380 · 2017-06-26T17:48:34.000+10:00
diff --git a/README.md b/README.md
@@ -80,7 +80,7 @@ The formula is implemented as an anonymous object. The code is quite verbose: 6
 
 ## Lambda expressions
 
-Let's start with a simple example of how to sort a list of strings in prior versions of Java:
+Let's start with a simple example of how to sort a list of strings in previous versions of Java:
 
 ```java
 List<String> names = Arrays.asList("peter", "anna", "mike", "xenia");
@@ -122,7 +122,7 @@ List now has a `sort` method. Also the java compiler is aware of the parameter t
 
 How does lambda expressions fit into Java's type system? Each lambda corresponds to a given type, specified by an interface. A so called _functional interface_ must contain **exactly one abstract method** declaration. Each lambda expression of that type will be matched to this abstract method. Since default methods are not abstract you're free to add default methods to your functional interface.
 
-We can use arbitrary interfaces as lambda expressions as long as the interface only contains one abstract method. To ensure that your interface meet the requirements, you should add the `@FunctionalInterface` annotation. The compiler is aware of this annotation and throws a compiler error as soon as you try to add a second abstract method declaration to the interface.
+We can use arbitrary interfaces as lambda expressions as long as the interface only contains one abstract method. To ensure that your interface meets the requirements, you should add the `@FunctionalInterface` annotation. The compiler is aware of this annotation and throws a compiler error as soon as you try to add a second abstract method declaration to the interface.
 
 Example:
 
