Update contributors.md

CONTRIBUTING.md

@@ -35,3 +35,26 @@ Syntax:
 * `MyClass.my_method(my_arg)` not `my_method( my_arg )` or `my_method my_arg`.
 * `a = b` and not `a=b`.
 * Follow the conventions you see used in the source already.
+
+8. If you need to rebase/update your branch with master, you should follow these steps:
+```ruby
+# GitHub ID: vbrazo
+# Branch: fixes/fix-warnings
+
+git remote -v # Show all Remote Branches
+git remote add faker git@github.com:stympy/faker.git # if you don't have the faker remote address yet
+git checkout master # switch to the master branch
+git reset --hard HEAD~50 # because your branch master might have things that don't need anymore
+git pull faker master # now you're good to go
+git push -f [your remote address] master # now your master is updated
+# in this case it would be git push -f vbrazo master
+
+# if you want to update your fixes/fix-warnings branch after updating your master:
+git checkout fixes/fix-warnings
+git merge --no-ff master
+git status # to see what files have conflicts. Fix the conflicts and commit them
+git add .
+git commit -m 'Fix merge conflicts with master'
+git push -f [your remote address] fixes/fix-warnings
+# in this case it would be git push -f vbrazo fixes/fix-warnings
+```