README: Replace backticks with asterisks

This is technically more correct.

Signed-off-by: Stephen Finucane <stephen@that.guru>

Author: stephenfin

README.rst

@@ -17,7 +17,7 @@ git-pw
    :target: https://travis-ci.org/getpatchwork/git-pw
    :alt: Build Status
 
-`git-pw` is a tool for integrating Git with `Patchwork`__, the web-based patch
+*git-pw* is a tool for integrating Git with `Patchwork`__, the web-based patch
 tracking system.
 
 .. important::
@@ -35,14 +35,14 @@ __ https://patchwork.ozlabs.org/help/pwclient/
 Installation
 ------------
 
-The easiest way to install `git-pw` and its dependencies is using ``pip``. To
+The easiest way to install *git-pw* and its dependencies is using ``pip``. To
 do so, run:
 
 .. code-block:: bash
 
    $ pip install git-pw
 
-You can also install `git-pw` manually. First, install the required
+You can also install *git-pw* manually. First, install the required
 dependencies.  On Fedora, run:
 
 .. code-block:: bash
@@ -113,14 +113,14 @@ configure the Patchwork project, run:
 Development
 -----------
 
-If you're interested in contributing to `git-pw`, first clone the repo:
+If you're interested in contributing to *git-pw*, first clone the repo:
 
 .. code-block:: bash
 
    $ git clone https://github.com/getpatchwork/git-pw
    $ cd git-pw
 
-Create a virtualenv, then install the package in `editable`__ mode:
+Create a *virtualenv*, then install the package in `editable`__ mode:
 
 .. code-block:: bash