Improve wording in the repository's ReadMe

Readme.rst

@@ -3,17 +3,17 @@ Pelican Plugins
 
 Beginning with version 3.0, Pelican supports plugins. Plugins are a way to add
 features to Pelican without having to directly modify the Pelican core. Starting
-with 3.2, all plugins (including the ones previously in the core) are
-moved here, so this is the central place for all plugins.
+with 3.2, all plugins (including the ones previously in the core) have been
+moved to this repository, so this is the central place for all plugins.
 
 How to use plugins
 ==================
 
-Easiest way to install and use these plugins is cloning this repo::
+The easiest way to install and use these plugins is to clone this repo::
 
     git clone --recursive https://github.com/getpelican/pelican-plugins
 
-and activating the ones you want in your settings file::
+and activate the ones you want in your settings file::
 
     PLUGIN_PATHS = ['path/to/pelican-plugins']
     PLUGINS = ['assets', 'sitemap', 'gravatar']