docs: Adding manpages for the command-line tools

Change-Id: I3eba0d125f7da51696342edce1a2f1ee33a0471a
refs: #1446
diff --git a/docs/manpages/nfd-status.rst b/docs/manpages/nfd-status.rst
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+nfd-status
+==========
+
+Usage
+-----
+
+::
+
+    nfd-status [options]
+
+Description
+-----------
+
+``nfd-status`` is a tool to retrieve and print out NFD version and status information.
+
+Options:
+--------
+
+``-h``
+  Print usage information.
+
+``-v``
+  Retrieve version information.
+
+``-f``
+  Retrieve face status information.
+
+``-b``
+  Retrieve FIB information.
+
+If no options are provided, all information is retrieved.
+
+Examples
+--------
+
+Get all status information from NFD::
+
+    $ nfd-status
+    General NFD status:
+                   version=1000
+                 startTime=20140427T230936.006000
+               currentTime=20140427T231055.924000
+                    uptime=79 seconds
+          nNameTreeEntries=12
+               nFibEntries=4
+               nPitEntries=2
+      nMeasurementsEntries=0
+                nCsEntries=24
+              nInInterests=20
+             nOutInterests=19
+                  nInDatas=24
+                 nOutDatas=19
+    Faces:
+      faceid=1 remote=internal:// local=internal:// counters={in={0i 24d} out={20i 0d}}
+      faceid=2 remote=udp4://224.0.23.170:56363 local=udp4://192.168.0.106:56363 counters={in={0i 0d} out={0i 0d}}
+      faceid=3 remote=udp4://224.0.23.170:56363 local=udp4://127.0.0.1:56363 counters={in={0i 0d} out={0i 0d}}
+      faceid=5 remote=fd://16 local=unix:///private/tmp/nfd.sock counters={in={12i 1d} out={1i 11d}}
+      faceid=8 remote=tcp4://131.179.196.46:6363 local=tcp4://192.168.0.106:56118 counters={in={0i 0d} out={0i 0d}}
+      faceid=9 remote=fd://17 local=unix:///private/tmp/nfd.sock counters={in={2i 0d} out={0i 1d}}
+    FIB:
+      /localhost/nfd nexthops={faceid=1 (cost=0)}
+      /localhop/nfd/rib nexthops={faceid=5 (cost=0)}
+      /ndn nexthops={faceid=8 (cost=0)}
+      /localhost/nfd/rib nexthops={faceid=5 (cost=0)}