Create README.md

Initial example, more to follow

Author: cevian

README.md

@@ -0,0 +1,31 @@
+go-stream
+=========
+
+This library is a framework for stream processing analysis.
+
+It is made up of a graph connecting a source to 1 or more operators, terminating at a sink. 
+Operators pass data from one to another with go channels. An example graph is:
+
+	input := make(chan stream.Object)
+
+	passthruFn := func(in int) []int {
+		return []int{in}
+	}
+
+	FirstOp := mapper.NewOp(passthruFn, "First PT no")
+	FirstOp.SetIn(input)
+	SecondOp := mapper.NewOp(passthruFn, "2nd PT no")
+
+	ch := stream.NewChain()
+	ch.Add(FirstOp)
+	ch.Add(SecondOp)
+	
+	ch.Start()
+
+Now any data sent through the input channel will be processed by the library.
+
+Compiling:
+	go build
+	
+Testing:
+	go test