tools: nfdc strategy list/show commands

refs #3865

Change-Id: I6cc115b3c3f3d0840814a329c68356bbe6ad2e3f
diff --git a/docs/manpages/nfdc-strategy.rst b/docs/manpages/nfdc-strategy.rst
index f89ee2b..7d32d0e 100644
--- a/docs/manpages/nfdc-strategy.rst
+++ b/docs/manpages/nfdc-strategy.rst
@@ -4,6 +4,7 @@
 SYNOPSIS
 --------
 | nfdc strategy [list]
+| nfdc strategy show [prefix] <PREFIX>
 | nfdc set-strategy <PREFIX> <STRATEGY>
 | nfdc unset-strategy <PREFIX>
 
@@ -17,7 +18,9 @@
 NFD contains multiple forwarding strategy implementations.
 The strategy choice table determines which strategy is used in forwarding an Interest.
 
-The **nfdc strategy list** command shows the strategy choices.
+The **nfdc strategy list** command shows a list of strategy choices.
+
+The **nfdc strategy show** command shows the effective strategy choice for a specific name.
 
 The **nfdc set-strategy** command sets the strategy for a name prefix.
 
@@ -39,6 +42,15 @@
     A name that identifies the forwarding strategy.
     Consult NFD Developer's Guide for a complete list of all implemented strategies.
 
+EXIT CODES
+----------
+
+0: Success
+
+1: An unspecified error occurred
+
+2: Malformed command line
+
 SEE ALSO
 --------
 nfd(1), nfdc(1)