Merge pull request airbnb#459 from airbnb/goatslacker-patch-1

Amendments section to encourage forking

Author: goatslacker

README.md

@@ -2177,4 +2177,8 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 **[⬆ back to top](#table-of-contents)**
 
+## Amendments
+
+We encourage you to fork this guide and change the rules to fit your team's style guide. Below, you may list some amendments to the style guide. This allows you to periodically update your style guide without having to deal with merge conflicts.
+
 # };