Add extra title to section on bootstrapping

README.md

@@ -47,6 +47,8 @@ To keep from having to install files to the user's system, the preferred method
 $ echo "PATH=<LocationOfDUNE>:$PATH" >> .bashrc
 ```
 
+### Bootstrap DUNE
+
 Pick your preferred terminal application and input the following command:
 
 ```console
@@ -92,6 +94,8 @@ From here add a new line with the location of the downloaded DUNE project:
 
 <img src="docs/images/env-vars-2.png" alt="env-vars-2" width="300">
 
+### Bootstrap DUNE
+
 Pick your preferred command line application and input the following command:
 
 ```console:
@@ -116,6 +120,8 @@ To keep from having to install files to the user's system, the preferred method
 $ echo "PATH=<LocationOfDUNE>:$PATH" >> .bashrc
 ```
 
+### Bootstrap DUNE
+
 Pick your preferred terminal application and input the following command:
 
 ```console