Update docs

Signed-off-by: Simon Sickle <sickle@hey.com>

Author: simonsickle

README.md

@@ -11,15 +11,14 @@ Usage
 -----
 
 When you want to use shared preferences, you can now call it in
-a simplified manor.
+a simplified manor. EncryptedSharedPreferences also works with this extension.
 
 ```kotlin
 val prefs = context.getSharedPreferences("nameOfPrefs", Context.MODE_PRIVATE)
 
 ...
 
-// Note, you must use nullable types as SharedPreferences doesn't enforce nullability like kotlin
-var someField: String? by prefs.delegate()
+var someField: String by prefs.delegate()
 
 // You can also set a default value and key name for the preferences
 var someOtherField: String by prefs.delegate(keyName = "SomeCoolPreference", defaultValue = "Hello")
@@ -34,9 +33,9 @@ fun doSomething(): String {
 
 Supported Types
 ---------------
-- String
-- String Set (`Set<String>`)
-- Int
-- Long
-- Float
-- Boolean
+- String (defaultValue is an empty string `""`)
+- String Set (defaultValue is an empty StringSet `emptySet<String>()`)
+- Int (defaultValue is -1)
+- Long (defaultValue is -1L)
+- Float (defaultValue is 0F)
+- Boolean (defaultValue is false)