docs: Small changes to plugin, updated the requirements

Change-Id: I3c05a28991d01e726d4fa8580a720359a2d4ce91
Signed-off-by: jdenisco <jdenisco@cisco.com>

docs/etc/requirements.txt

@@ -1,44 +1,23 @@
-alabaster==0.7.10
-argh==0.26.2
-Babel==2.5.3
-backports-abc==0.5
-certifi==2018.1.18
+alabaster==0.7.12
+Babel==2.6.0
+certifi==2018.10.15
 chardet==3.0.4
 CommonMark==0.5.4
-doc8==0.8.0
 docutils==0.14
-futures==3.2.0; python_version < '3.0'
-idna==2.6
-imagesize==1.0.0
+idna==2.7
+imagesize==1.1.0
 Jinja2==2.10
-livereload==2.5.1
 MarkupSafe==1.0
-packaging==17.1
-pathtools==0.1.2
-pbr==4.0.2
-pluggy==0.6.0
-port-for==0.3.1
-py==1.5.3
+packaging==18.0
 Pygments==2.2.0
-pyparsing==2.2.0
-pytz==2018.4
-PyYAML==3.12
+pyparsing==2.3.0
+pytz==2018.7
 recommonmark==0.4.0
 requests==2.20.0
-restructuredtext-lint==1.1.3
-singledispatch==3.4.0.3
 six==1.11.0
 snowballstemmer==1.2.1
-Sphinx==1.7.2
-sphinx-autobuild==0.7.1
-sphinx-bootstrap-theme==0.6.5
-sphinx-rtd-theme==0.3.0
-sphinxcontrib-httpdomain==1.6.1
-sphinxcontrib-websupport==1.0.1
-stevedore==1.28.0
-tornado==5.0.2
-tox==3.0.0
-typing==3.6.4
-urllib3==1.22
-virtualenv==15.2.0
-watchdog==0.8.3
+Sphinx==1.8.1
+sphinx-rtd-theme==0.4.2
+sphinxcontrib-websupport==1.1.0
+typing==3.6.6
+urllib3==1.24

docs/gettingstarted/developers/add_plugin.rst

@@ -9,20 +9,20 @@ Overview
 ________
  
 This section shows how a VPP developer can create a new plugin, and
-add it to VPP.
+add it to VPP. We assume that we are starting from the VPP <top-of-workspace>.
 
 As an example, we will use the **make-plugin.sh** tool found in
-**.../extras/emacs**. make-plugin.sh is a simple wrapper for a comprehensive
+**./extras/emacs**. make-plugin.sh is a simple wrapper for a comprehensive
 plugin generator constructed from a set of emacs-lisp skeletons.
 
 Create your new plugin
 ----------------------
 
-Change directory to **.../src/plugins**, and run the plugin generator:
+Change directory to **./src/plugins**, and run the plugin generator:
 
 .. code-block:: console
     
-    $ cd .../src/plugins
+    $ cd ./src/plugins
     $ ../../extras/emacs/make-plugin.sh
     <snip>
     Loading /scratch/vpp-docs/extras/emacs/tunnel-c-skel.el (source)...
@@ -63,7 +63,7 @@ Here are the generated files. We'll go through them in a moment.
 
 .. code-block:: console
 
-    $ cd .../src/plugins/myplugin
+    $ cd ./myplugin
     $ ls
     CMakeLists.txt        myplugin.c           myplugin_periodic.c  setup.pg
     myplugin_all_api_h.h  myplugin.h           myplugin_test.c
@@ -191,11 +191,16 @@ instance of this data structure.
 
 You can enable or disable specific vpp plugins from the command
 line. By default, plugins are loaded. To change that behavior, set
-default_disabled in the vlib_plugin_macro:
+default_disabled in the macro VLIB_PLUGIN_REGISTER:
 
 .. code-block:: console
 
-  .default_disabled = 1
+    VLIB_PLUGIN_REGISTER () =
+      {
+        .version = VPP_BUILD_VER,
+        .default_disabled = 1
+        .description = "myplugin plugin description goes here",
+      };
 
 The boilerplate generator places the graph node dispatch function
 onto the "device-input" feature arc. This may or may not be useful.
@@ -273,3 +278,7 @@ vlib_plugin_get_symbol(...) API:
 
     void *p = vlib_get_plugin_symbol ("plugin_name", "symbol");
 
+More Examples
+-------------
+
+For more information you can read many example plugins in the directory "./src/plugins".

docs/gettingstarted/developers/index.rst

@@ -21,6 +21,7 @@ The Developers section covers the following areas:
    building
    running_vpp
    gdb_examples
+   add_plugin
    gitreview
    softwarearchitecture
    infrastructure
@@ -34,5 +35,4 @@ The Developers section covers the following areas:
    binary_api_support
    buildsystem/index.rst
    eventviewer
-   add_plugin
    fib20/index.rst

docs/reference/cmdreference/index.rst

@@ -13,6 +13,7 @@ The debug CLI can be executed from a su (superuser) shell using the vppctl comma
 
     # sudo bash
     # vppctl show interface
+
                   Name               Idx       State          Counter          Count
     TenGigabitEthernet86/0/0          1         up       rx packets               6569213
                                                          rx bytes              9928352943
@@ -32,10 +33,6 @@ Commands can also be executed from the vppct shell.
 
     # vppctl
 
-     __/ __/ _ \  (_)__    | | / / _ \/ _ \
-     _/ _// // / / / _ \   | |/ / ___/ ___/
-     /_/ /____(_)_/\___/   |___/_/  /_/
-    
     vpp# show interface
                   Name               Idx       State          Counter          Count
     TenGigabitEthernet86/0/0          1         up       rx packets               6569213
@@ -57,4 +54,4 @@ Commands can also be executed from the vppct shell.
    ip/index.rst
    show/index.rst
    trace/index.rst
-   vhost/index.rst
+   vhost/index.rst