improved README

README.md

@@ -19,16 +19,16 @@ Unlike `ruby-debug`, pry-stack_explorer incurs no runtime cost and
 enables navigation right up the call-stack to the birth of the
 program.
 
-pry-stack_explorer is currently designed to work on MRI and
-Ruby 1.9.2+ (including 1.9.3). Support for other Ruby versions and
+pry-stack_explorer is currently designed to work on **MRI and
+Ruby 1.9.2+ (including 1.9.3)**. Support for other Ruby versions and
 implementations is planned for the future.
 
 The `up`, `down`, `frame` and `show-stack` commands are provided. See
 Pry's in-session help for more information on any of these commands.
 
 **How to use:**
 
-After installing pry-stack_explorer just start Pry as normal (typically via a `binding.pry`), the stack_explorer plugin will be detected and used automatically.
+After installing `pry-stack_explorer`, just start Pry as normal (typically via a `binding.pry`), the stack_explorer plugin will be detected and used automatically.
 
 * Install the [gem](https://rubygems.org/gems/pry-stack_explorer): `gem install pry-stack_explorer`
 * Read the [documentation](http://rdoc.info/github/banister/pry-stack_explorer/master/file/README.md)