more readme updates

Author: tamaskis

README.md

@@ -83,5 +83,5 @@ Sets the plot background for drawing celestial bodies in 3D.
 
 # Installation
 
-   - Open "`3D Earth and Celestial Bodies (planet3D).mltbx`" in the "`INSTALL`"" folder to install as a toolbox. MATLAB will automatically perform the installation and add all the functions, images, and data to the MATLAB search path.
-   - Alternatively, the "planet3D" folder can be copy and pasted into the folder containing the script that you want to use the functions in. At the beginning of the script, include "`addpath('planet3D')`" to add all functions, images, and data to the MATLAB search path.
+   - Open `3D Earth and Celestial Bodies (planet3D).mltbx` in the `INSTALL` folder to install as a toolbox. MATLAB will automatically perform the installation and add all the functions, images, and data to the MATLAB search path.
+   - Alternatively, the "planet3D" folder can be copy and pasted into the folder containing the script that you want to use the functions in. At the beginning of the script, include `addpath('planet3D')` to add all functions, images, and data to the MATLAB search path.