Fixed all H2 headings

Before, H2 fomratting was not consistent.
Now, all H2 headings use over/under asterisks.

docs/scenarios/cli.rst

@@ -23,31 +23,39 @@ Some popular command-line applications include:
 * `mercurial <https://www.mercurial-scm.org/>`_ - A distributed version control
   system primarily written in Python
 
+
+*****
 Clint
------
+*****
 
 `clint <https://pypi.python.org/pypi/clint/>`_ is a Python module which is
 filled with very useful tools for developing command-line applications.
 It supports features such as; CLI colors and indents, simple and powerful
 column printer, iterator based progress bars and implicit argument handling.
 
+
+*****
 Click
------
+*****
 
 `click <http://click.pocoo.org/>`_ is a Python package for creating
 command-line interfaces in a composable way with as little code as
 possible. This “Command-line Interface Creation Kit” is highly
 configurable but comes with good defaults out of the box.
 
+
+******
 docopt
-------
+******
 
 `docopt <http://docopt.org/>`_ is a lightweight, highly Pythonic package that
 allows creating command-line interfaces easily and intuitively, by parsing
 POSIX-style usage instructions.
 
+
+****
 Plac
-------
+****
 
 `Plac <https://pypi.python.org/pypi/plac>`_ is a simple wrapper
 over the Python standard library `argparse <http://docs.python.org/2/library/argparse.html>`_,
@@ -57,8 +65,10 @@ module targets especially unsophisticated users, programmers, sys-admins,
 scientists and in general people writing throw-away scripts for themselves,
 who choose to create a command-line interface because it is quick and simple.
 
+
+*****
 Cliff
-------
+*****
 
 `Cliff <http://docs.openstack.org/developer/cliff/>`_  is a framework for
 building command-line programs. It uses setuptools entry points to provide
@@ -67,8 +77,10 @@ to be used to create multi-level commands such as subversion and git, where
 the main program handles some basic argument parsing and then invokes a
 sub-command to do the work.
 
+
+******
 Cement
-------
+******
 
 `Cement <http://builtoncement.com/>`_ is an advanced CLI Application Framework.
 Its goal is to introduce a standard, and feature-full platform
@@ -77,8 +89,10 @@ as support rapid development needs without sacrificing quality.
 Cement is flexible, and it's use cases span from the simplicity of a micro-framework
 to the complexity of a meg-framework.
 
+
+***********
 Python Fire
------------
+***********
 
 `Python Fire <https://github.com/google/python-fire/>`_ is a library for
 automatically generating command line interfaces from absolutely any Python