update doc, #38

README.md

@@ -1,14 +1,18 @@
 shred
 ======
 
-Reusable components that are shared between isotopes-and-atomic-mass and build-an-atom.
+Reusable components that are shared between isotopes-and-atomic-mass, build-a-nucleus and build-an-atom.
 
 By PhET Interactive Simulations
 https://phet.colorado.edu/
 
 ### Documentation
-The [PhET Development Overview](https://github.com/phetsims/phet-info/blob/master/doc/phet-development-overview.md) is the most complete guide to PhET Simulation Development. This guide includes how
-to obtain simulation code and its dependencies, notes about architecture & design, how to test and build the sims, as well as other important information.
+
+The [PhET Development Overview](https://github.com/phetsims/phet-info/blob/master/doc/phet-development-overview.md) is
+the most complete guide to PhET Simulation Development. This guide includes how
+to obtain simulation code and its dependencies, notes about architecture & design, how to test and build the sims, as
+well as other important information.
 
 ### License
+
 See the [license](LICENSE).