Update README.md

Author: jontewks

README.md

@@ -21,4 +21,6 @@ If you need support for Japanese, Chinese, or Korean fonts, a fork of this build
 
 ## Issues
 
-If you run into any issues with this buildpack, please open an issue on this repo and/or submit a PR that resolves it. Different versions of chrome have different dependencies and so some issues can creep in without me knowing. Thanks!
+A common issue that people run into often is a cache issue with heroku. Often when you start seeing errors that chrome won't start and some libraries are missing, you can resolve it by clearing your heroku cache. Instructions for that can be found here: https://help.heroku.com/18PI5RSY/how-do-i-clear-the-build-cache
+
+If you are still running into any issues with this buildpack after doing the above, please open an issue on this repo and/or submit a PR that resolves it. Different versions of chrome have different dependencies and so some issues can creep in without me knowing. Thanks!