MINIFICPP-1120 - clarify C2.md

Signed-off-by: Arpad Boda <aboda@apache.org>

This closes #711
diff --git a/C2.md b/C2.md
index c1b411e..b907926 100644
--- a/C2.md
+++ b/C2.md
@@ -45,12 +45,12 @@
 For more more insight into the API used within the C2 agent, please visit:
 https://cwiki.apache.org/confluence/display/MINIFI/C2+Design+Proposal
 
-Release 0.6.0: Please note that all c2 properties now exist as nifi.c2.* . If your configuration properties
-files contain the former naming convention of c2.*, we will continue to support that as
+Release 0.6.0: Please note that all c2 properties now exist as `nifi.c2.*`. If your configuration properties
+files contain the former naming convention of `c2.*`, we will continue to support that as
 an alternate key, but you are encouraged to switch your configuration options as soon as possible.
 
 
-    in minifi.properties
+	#in minifi.properties
 
 	# Disable/Enable C2
 	nifi.c2.enable=true
@@ -59,10 +59,10 @@
 	nifi.c2.root.classes=DeviceInfoNode,AgentInformation,FlowInformation
 	
 	# specify C2 protocol -- default is CoapProtocol if not specified
-	nifi.c2.agent.protocol.class=CoapProtocol
+	#nifi.c2.agent.protocol.class=CoapProtocol
 	# may also use MQTT or REST
 	# nifi.c2.agent.protocol.class=MQTTC2Protocol
-	# nifi.c2.agent.protocol.class=RESTSender
+	nifi.c2.agent.protocol.class=RESTSender
 	
 	# control c2 heartbeat interval in millisecocnds
 	nifi.c2.agent.heartbeat.period=250
@@ -71,18 +71,18 @@
 	nifi.c2.agent.heartbeat.reporter.class=RESTReciver
 	
 	# specify the rest URIs if using RESTSender
-	nifi.c2.rest.url=http://localhost:10080/minifi-c2-api/c2-protocol/heartbeat
-	nifi.c2.rest.url.ack=http://localhost:10080/minifi-c2-api/c2-protocol/acknowledge
-	nifi.c2.flow.base.url=http://localhost:10080/minifi-c2-api/c2-protocol/
+	nifi.c2.rest.url=http://<your-c2-server>/<c2-api-path>/c2-protocol/heartbeat
+	nifi.c2.rest.url.ack=http://<your-c2-server>/<c2-api-path>/c2-protocol/acknowledge
+	nifi.c2.flow.base.url=http://<your-c2-server>/<c2-api-path>/c2-protocol/
 	
-	# c2 agent identifier
+	# c2 agent identifier -- must be defined to run agent
 	nifi.c2.agent.identifier=<your identifier>
 	
 	# c2 agent class -- must be defined to run agent
 	nifi.c2.agent.class=<your agent class>
 	
 	# configure SSL Context service for REST Protocol
-	nifi.c2.rest.ssl.context.service
+	#nifi.c2.rest.ssl.context.service
 
 
 ### Metrics