docs: Documentation updates
Change-Id: I7e10ba6bd1f70e779d5c2fc0437ff0f15828b312
Refs: #1923
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+nlsr
+====
+
+Usage
+-----
+
+::
+
+ nlsr [options]
+
+
+Description
+-----------
+
+``nlsr`` is a daemon that implements routing protocol in NDN to populates NDN's Routing
+Information Base.
+
+Options:
+--------
+
+
+``-d``
+ Run in daemon mode
+
+``-f <FILE>``
+ Specify configuration file name (default: ``./nlsr.conf``)
+
+``-V``
+ Display version information
+
+``-h``
+ Display this help message
+
+Examples
+--------
+
+To run NLSR daemon and use a configuration file from the ``/path/to`` directory.
+
+::
+
+ nlsr -f /path/to/nlsr.conf
+
+To run NLSR as daemon, use the ``-d`` flag:
+
+::
+
+ nlsr -d