[README] Logo + various small information

Author: kylef

README.md

@@ -1,3 +1,5 @@
+<img src="https://github.com/QueryKit/QueryKit/blob/master/QueryKit.png" width=96 height=120 alt="QueryKit Logo" />
+
 # RxQueryKit
 
 [RxSwift](https://github.com/ReactiveX/RxSwift) extensions for QueryKit.
@@ -10,15 +12,21 @@ RxQueryKit extends QueryKit and provides methods to evaluate and execute
 operations as observables.
 
 ```swift
-let queryset = Person.queryset(context).filter(Person.age > 25)
+let queryset = Person.queryset(context)
+    .filter { $0.age > 25 }
+    .orderBy { $0.name.ascending }
 ```
 
+You can subscribe to any changes to the results of this queryset using the following:
+
 ```swift
 queryset.objects().subscribeNext {
   print($0)
 }
 ```
 
+You can also subscribe to the number of matching objects:
+
 ```swift
 queryset.count().subscribeNext {
   print("There are now \($0) people who are more than 25.")
@@ -30,6 +38,8 @@ queryset.count().subscribeNext {
 RxQueryKit provides extensions on managed object context to observe when the
 objects in a context change or when a context will or did save.
 
+It provides a type safe structure providing the changes objects.
+
 ```swift
 context.qk_objectsDidChange().subscribeNext { notification in
   print('Objects did change:')
@@ -57,4 +67,4 @@ pod 'RxQueryKit'
 
 ## License
 
-
+QueryKit is released under the BSD license. See [LICENSE](LICENSE).