Fixed readme

README.md

@@ -30,17 +30,19 @@ Install using composer:
 You need a key for both generating and parsing tokens. Create a `JWTDerivedKey`
 or a `JWTPlaintextKey` and pass it to the `JWTToken` constructor:
 
+```php
 use NoccyLabs\SimpleJWT\Key\{JWTDerivedKey,JWTPlaintextKey}
 
 // Derive a key using secret and salt...
 $key = new JWTDerivedKey("secret", "salt");
 // ...or use a prepared plaintext key
 $key = new JWTPlaintextKey("This Should Be Binary Data.."); 
+```
 
 ### Generating tokens
 
 
-
+```php
 use NoccyLabs\SimpleJWT\JWTToken;
 
 $tok = new JWTToken($key);
@@ -54,6 +56,7 @@ $str = $tok->getSignedToken();
 
 Parsing is done by passing the raw token as the 2nd parameter
 
+```php
 use NoccyLabs\SimpleJWT\JWTToken;
 
 $str = "...received token...";
@@ -76,6 +79,7 @@ $val = $tok->claims->valueOf("some/claim/MaxItems", 64);
 
 ### Validating tokens
 
+```php
 use NoccyLabs\SimpleJWT\Validator\JWTValidator;
 
 $validator = new JWTValidator();
@@ -94,3 +98,4 @@ $val = $tok->claims->valueOf("some/claim/MaxItems", 64);
 catch (JWTValidatorException $e) {
     // validation failed
 }
+```