added changes on checking similarity

base/api/haystackreducer.py

@@ -0,0 +1,8 @@
+def haystackreducer(emissions):
+    """
+        haystackreducer is a class responsible for reducing emissions
+        from multiple map processes. It tallies the number of matches
+        from key-value pairs emitted from each mapper
+    """  
+    return len(emissions) 
+