added readme

README.md

@@ -1,4 +1,16 @@
-XamAndroidSettings
+Xamarin Shared Preference Abstraction
 ==================
 
-Abstraction around shared settings in Android xamarin
+Abstraction around shared settings in Android Xamarin
+
+## How to use:
+
+New up a settingskey class
+
+````c#
+
+var sk = new SharedSettingsAbstraction.Setting.SettingsKey<string>("KeyName", "PreferenceName", "DefaultValuehere");
+           var setting = sk.getSetting(Context con)
+		   var setsetting = sk.SetSetting(Context con, "New Value!")
+
+````