improve readme

README.md

 # Looping Workflows
 
-Scala Implementation of the workflow language with loops.
+Scala Implementation of the workflow language with loops published in CSF '17.
+
+## Parser 
 There is a working parser that can read the ``*.spec`` files in ``/examples``.
 
 Workflows can also be specified directly in Scala by instantiating case classes.
@@ -14,7 +16,7 @@ To get sbt to build the project properly, you have to add the Supersafe Compiler
 
 ## Example File Format
 
-A readable example can be found at ``/examples/easychair.spec``.
+A readable example can be found at ``/examples/conference.spec``.
 The example file format consists of the following blocks:
 
 ```
@@ -24,6 +26,15 @@ Workflow
 # If types are omitted, everything is of type T, types can be given while binding the variables with the forall x:X
 # Please use forallmay x:X,y:Y instead of forall x:X,y:Y may (because of easier parsing)
 
+Declassify
+
+# optional block
+# Declassification conditions for all Oracles.
+# Specify with types.
+# Use the first agent of the target as noninterference agent.
+# These are state-based, so will be evaluated on every state to find violations.
+# Currently, no temporal operators here are supported.
+
 Target
 
 # the relation where the noninterference counterexample should be found. Make sure the types match.