fix markdown trailing whitespace

README.md

 ## Overview
 
-Editoria is a book production platform, built with [Pubsweet](https://gitlab.coko.foundation/pubsweet/) and [Substance](http://substance.io/).
-This application is being developed by the [Coko Foundation](https://coko.foundation/), for the [University of California Press](http://www.ucpress.edu/).
+Editoria is a book production platform, built with [Pubsweet](https://gitlab.coko.foundation/pubsweet/) and [Substance](http://substance.io/).  
+This application is being developed by the [Coko Foundation](https://coko.foundation/), for the [University of California Press](http://www.ucpress.edu/).  
 <br>
 
 ## Requirements
 
-Node >= 7.6
-Npm >= 3
+Node >= 7.6  
+Npm >= 3  
 <br>
 
-Pubsweet >= 0.2
+Pubsweet >= 0.2  
 
 ## Installation
 
-First you need to clone this repository on your machine.
-```git clone git@gitlab.coko.foundation:yannisbarlas/editoria.git```
-or the ```https``` equivalent:
-```git clone https://gitlab.coko.foundation/yannisbarlas/editoria.git```
+First you need to clone this repository on your machine.  
+```git clone git@gitlab.coko.foundation:yannisbarlas/editoria.git```  
+or the ```https``` equivalent:  
+```git clone https://gitlab.coko.foundation/yannisbarlas/editoria.git```  
 <br>
 
-Once you have, navigate to the project's root directory.
-```cd editoria```
+Once you have, navigate to the project's root directory.  
+```cd editoria```  
 <br>
 
-This application requires node 7.6 or greater.
-If you use nvm for managing different node versions, the project includes an ```.nvmrc``` file that you can take advantage of.
+This application requires node 7.6 or greater.  
+If you use nvm for managing different node versions, the project includes an ```.nvmrc``` file that you can take advantage of.  
 <br>
 
-Install the latest version of the ```pubsweet``` command line tool.
-```npm install --global pubsweet```
+Install the latest version of the ```pubsweet``` command line tool.  
+```npm install --global pubsweet```  
 <br>
 
-Install the project's dependencies.
-```npm install```
+Install the project's dependencies.  
+```npm install```  
 <br>
 
-Create a database.
-```pubsweet setupdb ./```
+Create a database.  
+```pubsweet setupdb ./```  
 
-If you want to create a database for a development environment, simply pass the ```--dev``` option to the above command.
-```pubsweet setupdb ./ --dev```
+If you want to create a database for a development environment, simply pass the ```--dev``` option to the above command.  
+```pubsweet setupdb ./ --dev```  
 
-Follow the instructions, create the administrator user and name your first book.
+Follow the instructions, create the administrator user and name your first book.  
 <br>
 
-Once that is done, you can run the app like so:
-```pubsweet run```
-Or if you want the development environment:
-```pubsweet run --dev```
+Once that is done, you can run the app like so:  
+```pubsweet run```  
+Or if you want the development environment:  
+```pubsweet run --dev```  
 <br>
 
 ## Set up
 
-Log in as an administrator, and click on the "Teams" link in the navigation bar.
+Log in as an administrator, and click on the "Teams" link in the navigation bar.  
 <br>
 
-You can now assign different users to different roles.
-If a user is a production editor, the user can then also edit user roles for all other users.
+You can now assign different users to different roles.  
+If a user is a production editor, the user can then also edit user roles for all other users.