README.md in redgraph-0.1.3 vs README.md in redgraph-0.1.4

@@ -43,10 +43,20 @@
     edge = Redgraph::Edge.new(src: actor, dest: film, type: 'ACTOR_IN', properties: {role: "Tony Montana"})
     => #<Redgraph::Edge:0x00007f8d5f9ae3d8 @dest=#<Redgraph::Node:0x00007f8d5f85ccc8 @id=1, @label="film", @properties={:name=>"Scarface"}>, @dest_id=1, @properties={:role=>"Tony Montana"}, @src=#<Redgraph::Node:0x00007f8d5f95cf88 @id=0, @label="actor", @properties={:name=>"Al Pacino"}>, @src_id=0, @type="ACTOR_IN">
     @graph.add_edge(edge)
     => #<Redgraph::Edge:0x00007f8d5f9ae3d8 @dest=#<Redgraph::Node:0x00007f8d5f85ccc8 @id=1, @label="film", @properties={:name=>"Scarface"}>, @dest_id=1, @id=0, @properties={:role=>"Tony Montana"}, @src=#<Redgraph::Node:0x00007f8d5f95cf88 @id=0, @label="actor", @properties={:name=>"Al Pacino"}>, @src_id=0, @type="ACTOR_IN">
 
+You can merge nodes - the node will be created only if there isn't another with the same label and properties:
+
+    graph.merge_node(film)
+    => #<Redgraph::Node:0x00007f8d5f85ccc8 @id=1, @label="film", @properties={:name=>"Scarface"}>
+
+Same with edges:
+
+    @graph.merge_edge(edge)
+    => #<Redgraph::Edge:0x00007f8d5f9ae3d8 @dest=#<Redgraph::Node:0x00007f8d5f85ccc8 @id=1, @label="film", @properties={:name=>"Scarface"}>, @dest_id=1, @id=0, @properties={:role=>"Tony Montana"}, @src=#<Redgraph::Node:0x00007f8d5f95cf88 @id=0, @label="actor", @properties={:name=>"Al Pacino"}>, @src_id=0, @type="ACTOR_IN">
+
 Find a node by id:
 
     @graph.find_node_by_id(1)
     => #<Redgraph::Node:0x00007f8d5c2c6e88 @id=1, @label="film", @properties={"name"=>"Scarface"}>
 
@@ -69,14 +79,31 @@
 Getting edges:
 
     @graph.edges
     @graph.edges(src: actor, dest: film)
     @graph.edges(kind: 'FRIEND_OF', limit: 10, skip: 20)
+    @graph.count_edges
 
 Running custom queries
 
     @graph.query("MATCH (src)-[edge:FRIEND_OF]->(dest) RETURN src, edge")
 
+### NodeModel
+
+You can use the `NodeModel` mixin for a limited ActiveRecord-like interface:
+
+    class Actor
+      include Redgraph::NodeModel
+      self.graph = Redgraph::Graph.new("movies", url: $REDIS_URL)
+      attribute :name
+    end
+
+And this will give you stuff such as
+
+    Actor.count
+    john = Actor.new(name: "John Travolta")
+    john.add_to_graph # Will add the node to the graph
+    john.add_relation(type: "ACTED_IN", node: film, properties: {role: "Tony Manero"})
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run