Adds suggestion to npm upgrade

README.md

@@ -12,6 +12,10 @@ Brian is using a font called [Dankmono][dankmono] (not necessary to install -- j
 
 ## Debugging 
 
+### npm install Issues:
+
+Try running `npm upgrade` before `npm install` to update package.json dependencies.
+
 ### Parcel Issues:
 
 Parcel is an ever evolving project that's just getting better. If you run into problems with it not respecting changes (particularly to your `.babelrc` or `.env` files) then delete the `dist/` and the `.cache/` directories. You can do this in bash by running from the root directoy of your project `rm -rf dist/ .cache/` or just by deleting those directories in your editor. This will force Parcel to start over and not cache anything.