how-to-sync-repos.md

+This is the procedure to sync this fairchat.ReactNative repo on your machine with the upstream/master branch of the [Rocket.Chat.ReactNative]
+(https://github.com/RocketChat/Rocket.Chat.ReactNative/) project.
+
+
+Open Terminal.
+
+Change the current working directory to your local fairchat.ReactNative project.
+
+Fetch the branches and their respective commits from the upstream repository. Commits to master will be stored in a local branch, upstream/master.
+
+$ git fetch upstream
+> remote: Counting objects: 75, done.
+> remote: Compressing objects: 100% (53/53), done.
+> remote: Total 62 (delta 27), reused 44 (delta 9)
+> Unpacking objects: 100% (62/62), done.
+> From https://github.com/RocketChat/Rocket.Chat.ReactNative/>  * [new branch]      master     -> upstream/master
+
+Check out your fork's local master branch.
+
+$ git checkout master
+> Switched to branch 'master'
+
+Merge the changes from upstream/master into your local master branch. This brings your fork's master branch into sync with the upstream repository, without losing your local changes.
+
+$ git merge upstream/master
+> Updating a422352..5fdff0f
+> Fast-forward
+>  README                    |    9 -------
+>  README.md                 |    7 ++++++
+>  2 files changed, 7 insertions(+), 9 deletions(-)
+>  delete mode 100644 README
+>  create mode 100644 README.md
+
+If your local branch didn't have any unique commits, Git will instead perform a "fast-forward": 
+
+Push changes to the fairchat.ReactNative repo.
+
+> git push
+
+Source: [Syncing a fork](https://help.github.com/en/articles/syncing-a-fork)
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